| 
                                    Penstemon barnebyi N.H.Holmgren
                                 | 
                                W. E. Niles 3560 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. 3 miles west… | 
                                — | 
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                                | 
                                    Abronia nana S.Watson var. nana
                                 | 
                                W. E. Niles 3563 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. 3 miles west… | 
                                — | 
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                                    Eriogonum microthecum var. simpsonii (Benth.) Reveal
                                 | 
                                W. E. Niles 3 | 
                                15 Oct 1991 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Northwest edge of… | 
                                — | 
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                                    Paronychia sessiliflora Nutt.
                                 | 
                                W. E. Niles 3635 | 
                                13 Jul 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. About 11 miles… | 
                                — | 
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                                    Lepidium nanum S.Watson
                                 | 
                                W. E. Niles 3552 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. 3 miles west… | 
                                — | 
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                                    Penstemon petiolatus Brandegee
                                 | 
                                W. E. Niles 3054 | 
                                29 May 1980 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. West side E.… | 
                                — | 
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                                    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)… | 
                                — | 
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                                | 
                                    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… | 
                                — | 
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                                    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… | 
                                — | 
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                                | 
                                    Ailanthus altissima (Mill.) Swingle
                                 | 
                                W. E. Niles 1228 | 
                                06 Jun 1969 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. At Hot Creek… | 
                                — | 
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                                | 
                                    Elaeagnus angustifolia L.
                                 | 
                                W. E. Niles 3651 | 
                                12 May 1991 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Intersection of Warm… | 
                                — | 
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                                    Penstemon thompsoniae (A.Gray) Rydb.
                                 | 
                                W. E. Niles 3576 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. 4 miles west… | 
                                — | 
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                                    Lepidium latifolium L.
                                 | 
                                W. E. Niles 3487 | 
                                30 Apr 1989 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Bottom of Flamingo… | 
                                — | 
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                                | 
                                    Astragalus lonchocarpus Torr.
                                 | 
                                W. E. Niles 3585 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Ca. 15 miles… | 
                                — | 
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                                | 
                                    Astragalus pinonis M.E.Jones var. pinonis
                                 | 
                                W. E. Niles 3548 | 
                                30 May 1997 | 
                                United States of America | 
                                Nevada | 
                                Nye Co. Along NV State… | 
                                — | 
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                                    Astragalus platytropis A.Gray
                                 | 
                                W. E. Niles 3669 | 
                                13 Jul 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Just below Mount… | 
                                — | 
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                                    Psoralidium lanceolatum (Pursh) Rydb.
                                 | 
                                W. E. Niles 2140 | 
                                04 Jun 1977 | 
                                United States of America | 
                                Utah | 
                                Washington Co. Near Cinder Mountain;… | 
                                — | 
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                                | 
                                    Lupinus argenteus Pursh var. argenteus
                                 | 
                                W. E. Niles 3628 | 
                                04 Jun 1974 | 
                                United States of America | 
                                Nevada | 
                                Esmeralda Co. Chiatovich Canyon, west… | 
                                — | 
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                                | 
                                    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… | 
                                — | 
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                                | 
                                    Collomia grandiflora Douglas ex Lindl.
                                 | 
                                W. E. Niles 5274 | 
                                12 Jul 1997 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Clover Mountains | 
                                — | 
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                                    Oenothera flava (A.Nelson) Garrett
                                 | 
                                W. E. Niles 630 | 
                                09 Jun 1975 | 
                                United States of America | 
                                Arizona | 
                                Mohave Co. 200 m west… | 
                                — | 
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                                | 
                                    Cerastium beeringianum Cham. & Schltdl.
                                 | 
                                W. E. Niles 6175 | 
                                16 Jul 1999 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. At edge of… | 
                                — | 
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                                | 
                                    Stellaria nitens Nutt.
                                 | 
                                W. E. Niles 4656 | 
                                28 Feb 1997 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Cottonwood Wash and… | 
                                — | 
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                                | 
                                    Stellaria nitens Nutt.
                                 | 
                                W. E. Niles 4764 | 
                                25 Apr 1997 | 
                                United States of America | 
                                Nevada | 
                                Clark Co. Grapevine Spring, about… | 
                                — | 
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                                | 
                                    Muhlenbergia porteri Scribn. ex Beal
                                 | 
                                W. E. Niles 3704 | 
                                15 Oct 1991 | 
                                United States of America | 
                                Nevada | 
                                Lincoln Co. Ca. 4 miles… | 
                                — | 
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