| 
                                    Penstemon barnebyi N.H.Holmgren
                                 | 
                                W. E. Niles 3560 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. 3 miles west… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Abronia nana S.Watson var. nana
                                 | 
                                W. E. Niles 3563 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. 3 miles west… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Eriogonum microthecum var. simpsonii (Benth.) Reveal
                                 | 
                                W. E. Niles 3 | 
                                15 Oct 1991 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Northwest edge of… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Paronychia sessiliflora Nutt.
                                 | 
                                W. E. Niles 3635 | 
                                13 Jul 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. About 11 miles… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Lepidium nanum S.Watson
                                 | 
                                W. E. Niles 3552 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. 3 miles west… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Penstemon petiolatus Brandegee
                                 | 
                                W. E. Niles 3054 | 
                                29 May 1980 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. West side E.… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Penstemon leiophyllus var. keckii (Clokey) N.H.Holmgren
                                 | 
                                W. E. Niles 3132 | 
                                16 Sep 1978 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Off (south of)… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Astragalus bisulcatus var. nevadensis (M.E.Jones) Barneby
                                 | 
                                W. E. Niles 3571 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. On the banks… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Physaria kingii subsp. latifolia (A.Nelson) O'Kane & Al-Shehbaz
                                 | 
                                W. E. Niles 5272 | 
                                27 Jun 1995 | 
                                United States of America | 
                                Nevada | 
                                Esmeralda Co. Magruder Mountain, Magruder… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Ailanthus altissima (Mill.) Swingle
                                 | 
                                W. E. Niles 1228 | 
                                06 Jun 1969 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. At Hot Creek… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Elaeagnus angustifolia L.
                                 | 
                                W. E. Niles 3651 | 
                                12 May 1991 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Intersection of Warm… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Penstemon thompsoniae (A.Gray) Rydb.
                                 | 
                                W. E. Niles 3576 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. 4 miles west… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Lepidium latifolium L.
                                 | 
                                W. E. Niles 3487 | 
                                30 Apr 1989 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Bottom of Flamingo… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Astragalus lonchocarpus Torr.
                                 | 
                                W. E. Niles 3585 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Ca. 15 miles… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Astragalus pinonis M.E.Jones var. pinonis
                                 | 
                                W. E. Niles 3548 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. Along NV State… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Astragalus platytropis A.Gray
                                 | 
                                W. E. Niles 3669 | 
                                13 Jul 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Just below Mount… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Psoralidium lanceolatum (Pursh) Rydb.
                                 | 
                                W. E. Niles 2140 | 
                                04 Jun 1977 | 
                                United States of America | 
                                Utah | 
                                Washington Co. Near Cinder Mountain;… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Lupinus argenteus Pursh var. argenteus
                                 | 
                                W. E. Niles 3628 | 
                                04 Jun 1974 | 
                                United States of America | 
                                Nevada | 
                                Esmeralda Co. Chiatovich Canyon, west… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Ivesia sabulosa (M.E.Jones) D.D.Keck
                                 | 
                                W. E. Niles 3644 | 
                                13 Jul 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Between Logan Pass… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Collomia grandiflora Douglas ex Lindl.
                                 | 
                                W. E. Niles 5274 | 
                                12 Jul 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Clover Mountains | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Oenothera flava (A.Nelson) Garrett
                                 | 
                                W. E. Niles 630 | 
                                09 Jun 1975 | 
                                United States of America | 
                                Arizona | 
                                Mohave Co. 200 m west… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Cerastium beeringianum Cham. & Schltdl.
                                 | 
                                W. E. Niles 6175 | 
                                16 Jul 1999 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. At edge of… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Stellaria nitens Nutt.
                                 | 
                                W. E. Niles 4656 | 
                                28 Feb 1997 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Cottonwood Wash and… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Stellaria nitens Nutt.
                                 | 
                                W. E. Niles 4764 | 
                                25 Apr 1997 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Grapevine Spring, about… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Muhlenbergia porteri Scribn. ex Beal
                                 | 
                                W. E. Niles 3704 | 
                                15 Oct 1991 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Ca. 4 miles… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phalaris minor Retz.
                                 | 
                                W. E. Niles 3721 | 
                                09 Nov 1991 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Logandale, near Muddy… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phalaris minor Retz.
                                 | 
                                W. E. Niles 3657 | 
                                12 May 1991 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Las Vegas, Warm… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Tridens muticus (Torr.) Nash
                                 | 
                                W. E. Niles 1165 | 
                                04 Sep 1969 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Sheep Range, mouth… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Dichanthelium acuminatum (Sw.) Gould & C.A.Clark var. acuminatum
                                 | 
                                W. E. Niles 1188 | 
                                12 Jun 1969 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Spring Mountains, mouth… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Eragrostis cilianensis (All.) Vignolo ex Janch.
                                 | 
                                W. E. Niles 3590 | 
                                19 Oct 1990 | 
                                United States of America | 
                                Nevada | 
                                Spring Mountain Ranch State Park. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Scutellaria nana A.Gray
                                 | 
                                W. E. Niles 5335 | 
                                12 Jul 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Head of Ash… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Astragalus geyeri var. triquetrus (A.Gray) M.E.Jones
                                 | 
                                W. E. Niles 4119 | 
                                17 May 1995 | 
                                United States of America | 
                                Arizona | 
                                Mohave Co. Sand Holleo Wash,… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Lomatium nevadense (S.Watson) J.M.Coult. & Rose var. nevadense
                                 | 
                                W. E. Niles 554112 May 1995 | 
                                12 May 1995 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. Nevada Test Site,… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Astragalus preussii var. laxiflorus A.Gray
                                 | 
                                W. E. Niles 4568 | 
                                21 Mar 1997 | 
                                United States of America | 
                                Arizona | 
                                Mohave Co. Gypsum Hills, ca.… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Psorothamnus scoparius (A.Gray) Rydb.
                                 | 
                                W. E. Niles 1212 | 
                                31 Aug 1959 | 
                                United States of America | 
                                New Mexico | 
                                Doña Ana Co. Along State… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Bouteloua gracilis (Kunth) Lag. ex Griffiths
                                 | 
                                W. E. Niles 1154 | 
                                04 Sep 1969 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Bottom of Sawmill… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Poa abbreviata subsp. pattersonii (Vasey) Á.Löve, D.Löve & B.M.Kapoor
                                 | 
                                W. E. Niles 6266 | 
                                20 Jun 1977 | 
                                United States of America | 
                                Utah | 
                                Garfield Co. Uncommon in small… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Lolium arundinaceum (Schreb.) Darbysh.
                                 | 
                                W. E. Niles 3488 | 
                                30 Apr 1989 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. bottom of Flamingo… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Chrysothamnus nauseosus var. hololeucus (A.Gray) H.M.Hall
                                 | 
                                W. E. Niles 1202 | 
                                04 Sep 1969 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Vicinity of picnic… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Conyza bonariensis (L.) Cronquist
                                 | 
                                W. E. Niles 3578 | 
                                26 Jul 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Las Vegas, University… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Trianthema portulacastrum L.
                                 | 
                                W. E. Niles 3721 | 
                                09 Nov 1991 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Logandale, state highway… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Anthriscus caucalis M.Bieb.
                                 | 
                                W. E. Niles 3630 | 
                                10 Apr 1991 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Las Vegas, University… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Aloysia wrightii A.Heller ex Abrams
                                 | 
                                W. E. Niles 3698 | 
                                28 Sep 1991 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Ca. 7 miles… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Mentha arvensis L.
                                 | 
                                W. E. Niles 1184 | 
                                8/14/69 | 
                                United States of America | 
                                New Mexico | 
                                Taos Co. Along Taos Creek… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Petalonyx thurberi A.Gray
                                 | 
                                W. E. Niles s.n. | 
                                11 Jun 1977 | 
                                United States of America | 
                                California | 
                                Inyo Co. 7 mi. S.… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Eriogonum umbellatum var. subaridum S.Stokes
                                 | 
                                W. E. Niles 1159 | 
                                04 Sep 1969 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. just south of… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Perityle stansburyi (A.Gray) J.F.Macbr.
                                 | 
                                W. E. Niles 417 | 
                                10 Jul 1964 | 
                                United States of America | 
                                Nevada | 
                                White Pine Co. southeast of… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Perityle staurophylla (Barneby) Shinners
                                 | 
                                W. E. Niles 431 | 
                                12 Sep 1961 | 
                                United States of America | 
                                New Mexico | 
                                Otero Co. below highway, about… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Perityle tenella (M.E.Jones) J.F.Macbr.
                                 | 
                                W. E. Niles 419 | 
                                11 Jul 1964 | 
                                United States of America | 
                                Utah | 
                                Washington Co. In crevices of… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Perityle tenella (M.E.Jones) J.F.Macbr.
                                 | 
                                W. E. Niles 128 | 
                                19 Aug 1963 | 
                                United States of America | 
                                Arizona | 
                                Mohave Co. Castle Rocks, about… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Pluchea odorata (L.) Cass.
                                 | 
                                W. E. Niles 3682 | 
                                08 Oct 1991 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. 7.7 miles N… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Caulanthus crassicaulis (Torr.) S.Watson
                                 | 
                                W. E. Niles 928 | 
                                27 Apr 1969 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. north of Mountain… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Chorispora tenella (Pall.) DC.
                                 | 
                                W. E. Niles 3417 | 
                                06 Mar 1988 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Sunset Road, south… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Descurainia obtusa (Greene) O.E.Schulz
                                 | 
                                W. E. Niles 3540 | 
                                12 Jul 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Cold Creek, Spring… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phacelia cryptantha Greene
                                 | 
                                W. E. Niles 4462 | 
                                26 Jun 1995 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. south slope of… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phacelia ivesiana Torr.
                                 | 
                                W. E. Niles 1234 | 
                                25 Apr 1971 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. broad wash north… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phacelia lemmonii A.Gray
                                 | 
                                W. E. Niles 4760 | 
                                25 Apr 1997 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Grapevine Spring, about… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Cryptantha confertiflora (Greene) Payson
                                 | 
                                W. E. Niles 3079 | 
                                21 Apr 1979 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. east of Jackrabbit… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Cryptantha dumetorum (Greene ex A.Gray) Greene
                                 | 
                                W. E. Niles 4672 | 
                                21 Mar 1997 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. St. Thomas Gap | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Castilleja sulphurea Rydb.
                                 | 
                                W. E. Niles 1129 | 
                                27 Jul 1971 | 
                                United States of America | 
                                New Mexico | 
                                Rio Arriba Co. summit of… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Eremogone stenomeres (Eastw.) Ikonn.
                                 | 
                                W. E. Niles 4811 | 
                                16 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. on limestone ridges,… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Epilobium ciliatum Raf. var. ciliatum
                                 | 
                                W. E. Niles 3522 | 
                                12 Jul 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. along ditch leading… | 
                                — | 
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                                | 
                                    Gilia stellata A.Heller
                                 | 
                                W. E. Niles 3534 | 
                                03 May 1991 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. near junction of… | 
                                — | 
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                                | 
                                    Pedicularis racemosa var. alba (Pennell) Cronquist
                                 | 
                                W. E. Niles 1130 | 
                                27 Jul 1971 | 
                                United States of America | 
                                New Mexico | 
                                Rio Arriba Co. summit of… | 
                                — | 
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                                | 
                                    Gaura coccinea Pursh
                                 | 
                                W. E. Niles 3705 | 
                                15 Oct 1991 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. ca 4 miles… | 
                                — | 
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                                | 
                                    Linanthus jonesii (A.Gray) Greene
                                 | 
                                W. E. Niles 1143 | 
                                13 Mar 1973 | 
                                United States of America | 
                                Arizona | 
                                Mohave Co. Along road to… | 
                                — | 
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                                | 
                                    Atriplex lentiformis (Torr.) S.Watson
                                 | 
                                W. E. Niles 3601 | 
                                14 Oct 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Las Vegas Wash,… | 
                                — | 
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                                | 
                                    Atriplex polycarpa (Torr.) S.Watson
                                 | 
                                W. E. Niles 3680 | 
                                08 Oct 1991 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Meadow Valley Wash,… | 
                                — | 
                                 | 
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                                | 
                                    Atriplex torreyi (S.Watson) S.Watson var. torreyi
                                 | 
                                W. E. Niles 4429 | 
                                06 Oct 1995 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. Amargosa Valley, ca… | 
                                — | 
                                 | 
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                                | 
                                    Atriplex torreyi (S.Watson) S.Watson var. torreyi
                                 | 
                                W. E. Niles 3600 | 
                                14 Oct 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Las Vegas Wash,… | 
                                — | 
                                 | 
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                                | 
                                    Atriplex torreyi (S.Watson) S.Watson var. torreyi
                                 | 
                                W. E. Niles 3583 | 
                                18 Sep 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Mojave Nature Park,… | 
                                — | 
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                                | 
                                    Chenopodium album L.
                                 | 
                                W. E. Niles 3583 | 
                                18 Sep 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Mojave Nature Park,… | 
                                — | 
                                 | 
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                                | 
                                    Chenopodium incanum (S.Watson) A.Heller
                                 | 
                                W. E. Niles 3501 | 
                                28 Jun 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. off Lovell Wash… | 
                                — | 
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                                | 
                                    Amaranthus albus L.
                                 | 
                                W. E. Niles 3512 | 
                                21 Jul 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Mojave Nature Park,… | 
                                — | 
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                                | 
                                    Amaranthus blitoides S.Watson
                                 | 
                                W. E. Niles 3588 | 
                                19 Oct 1990 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Spring Mountain Ranch… | 
                                — | 
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