| 
                                    Spyridia filamentosa (Wulfen) Harv.
                                 | 
                                J. E. Tilden s.n. | 
                                May 1900 | 
                                United States of America | 
                                Hawaii | 
                                Hawaiian Islands, Oahu, Waianae, on… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Polysiphonia calothrix Harv.
                                 | 
                                J. E. Tilden s.n. | 
                                Jun 1900 | 
                                United States of America | 
                                Hawaii | 
                                Oahu, Koolauloa, Laie point, under… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Laurencia perforata (Bory) Mont.
                                 | 
                                J. E. Tilden s.n. | 
                                May 1900 | 
                                United States of America | 
                                Hawaii | 
                                Oahu, Waianae, attached to rocks… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Hypnea pannosa J.Agardh
                                 | 
                                J. E. Tilden s.n. | 
                                May 1900 | 
                                United States of America | 
                                Hawaii | 
                                Oahu, Waianae, growing on rocks… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Gracilaria coronopifolia J.Agardh
                                 | 
                                J. E. Tilden s.n. | 
                                May 1900 | 
                                United States of America | 
                                Hawaii | 
                                Oahu, Waianae, attached to rocks | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Euthora cristata (C.Agardh) J.Agardh
                                 | 
                                J. E. Tilden s.n. | 
                                May 1900 | 
                                United States of America | 
                                Hawaii | 
                                Oahu, Waianae, on rocks at… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Galaxaura infirma Kjellm.
                                 | 
                                J. E. Tilden s.n. | 
                                May 1900 | 
                                United States of America | 
                                Hawaii | 
                                Oahu, Waianae, on rocks at… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Sargassum bacciferum (W.B.Turner) C.Agardh
                                 | 
                                C. W. Hall s.n. | 
                                Feb 1909 | 
                                — | 
                                — | 
                                 | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Sargassum bacciferum (W.B.Turner) C.Agardh
                                 | 
                                C. W. Hall s.n. | 
                                Feb 1909 | 
                                — | 
                                — | 
                                 | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Pithophora affinis Nordst.
                                 | 
                                M. G. Fanning s.n. | 
                                s.d. | 
                                United States of America | 
                                Texas | 
                                 | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Cladophora fracta var. normalis Rabenh.
                                 | 
                                D. Griffiths 2742 | 
                                Aug 1901 | 
                                United States of America | 
                                Oregon | 
                                Andrews, Mann's Lake | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Cladophora fracta var. lacustris (Kütz.) Brand
                                 | 
                                J. E. Tilden s.n. | 
                                23 Aug 1901 | 
                                United States of America | 
                                Minnesota | 
                                Saint Louis Co. Cascade Park,… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Cladophora glomerata var. simplicior Kütz.
                                 | 
                                H. F. Schrader s.n. | 
                                s.d. | 
                                United States of America | 
                                Minnesota | 
                                Hennepin Co. Mississippi River, Meeker… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Cladophora hawaiiana Tilden
                                 | 
                                J. E. Tilden s.n. | 
                                18 Jun 1900 | 
                                United States of America | 
                                Hawaii | 
                                Oahu. Koolauloa, Laie beach | 
                                type | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Rhizoclonium hieroglyphicum (C.Agardh) Kütz.
                                 | 
                                M. G. Fanning 7 | 
                                1902 | 
                                United States of America | 
                                Texas | 
                                 | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Chaetophora cornudamae (Roth) C.Agardh
                                 | 
                                N. P. B. Nelson s.n. | 
                                22 Jun 1902 | 
                                United States of America | 
                                Minnesota | 
                                City Center, Chisago Lake, on… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Tetraspora lubrica var. lacunosa (Duby) Rabenh.
                                 | 
                                C. F. Baker s.n. | 
                                24 Mar 1897 | 
                                United States of America | 
                                Alabama | 
                                Lee Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Ecballocystis willeana Yendo
                                 | 
                                J. E. Tilden s.n. | 
                                04 Aug 1898 | 
                                Canada | 
                                British Columbia | 
                                Vancouver Island, Port Renfrew, Minnesota… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Choaspis stictica (Sm.) Kuntze
                                 | 
                                D. Hone | J. E. Tilden s.n. | 
                                Nov 1908 | 
                                United States of America | 
                                Minnesota | 
                                Hennepin Co. Columbia Heights, City… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Dysphinctium notabile (de Bary) Hansg.
                                 | 
                                J. E. Tilden s.n. | 
                                Jan 1906 | 
                                United States of America | 
                                Minnesota | 
                                University of Minnesota, in tank | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Cosmarium botrytis Menegh.
                                 | 
                                J. E. Tilden s.n. | 
                                Mar 1909 | 
                                United States of America | 
                                Minnesota | 
                                University of Minnesota, in tank | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Melosira granulata (Ehrenb.) Ralfs
                                 | 
                                W. A. Kellerman 5054 | 
                                26 Jan 1906 | 
                                Guatemala | 
                                — | 
                                Rio Michatoya, on-half mile from… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Renfrewia parvula Griggs
                                 | 
                                R. F. Griggs s.n. | 
                                Aug 1905 | 
                                Canada | 
                                British Columbia | 
                                Port Renfrew, Minnesota Seaside Station,… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phormidium laminosum Gomont
                                 | 
                                W. A. Kellerman 5053 | 
                                25 Jan 1906 | 
                                Guatemala | 
                                — | 
                                near Lake Amatitlan, in a… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Cladophora punaensis Tilden
                                 | 
                                J. E. Tilden s.n. | 
                                18 Jul 1900 | 
                                United States of America | 
                                Hawaii | 
                                Puna | 
                                isotype | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phormidium favosum (Bory) Gomont
                                 | 
                                M. G. Fanning 9 | 
                                1902 | 
                                United States of America | 
                                Texas | 
                                 | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phormidium inundatum Kütz.
                                 | 
                                T. A. Williams | D. Griffiths 1 | 
                                01 Sep 1898 | 
                                United States of America | 
                                Montana | 
                                Yellowstone Co. on pottoms of… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Microcoleus paludosus Gomont
                                 | 
                                J. E. Tilden s.n. | 
                                18 Jul 1900 | 
                                United States of America | 
                                Hawaii | 
                                Puna, with other algae forming… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Nitella tenuissima (Desv.) Kütz.
                                 | 
                                N. L. Huff s.n. | 
                                s.d. | 
                                United States of America | 
                                Minnesota | 
                                Echo Lake, near St. Paul | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Tolypothrix tenuis Kütz.
                                 | 
                                J. E. Tilden s.n. | 
                                Mar 1909 | 
                                United States of America | 
                                Minnesota | 
                                University of Minnesota, Botanical Department,… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Scytonema mirabile Bornet
                                 | 
                                J. E. Tilden s.n. | 
                                07 Jul 1900 | 
                                United States of America | 
                                Hawaii | 
                                Waialuka River Falls, four miles… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Stigonema ocellatum Thur. ex Bornet & Flahault
                                 | 
                                W. A. Kellerman 5070 | 
                                03 Feb 1906 | 
                                Guatemala | 
                                — | 
                                near Lake Atitlan, on side… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Scytonema azureum Tilden
                                 | 
                                J. E. Tilden s.n. | 
                                18 Jul 1900 | 
                                United States of America | 
                                Hawaii | 
                                Puna, with other algae forming… | 
                                type | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Gloeocapsa arenaria (Hassall) Rabenh.
                                 | 
                                J. E. Tilden s.n. | 
                                Mar 1909 | 
                                United States of America | 
                                Minnesota | 
                                University of Minnesota, in tank | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phormidium crosbyanum Tilden
                                 | 
                                J. E. Tilden s.n. | 
                                21 May 1900 | 
                                United States of America | 
                                Hawaii | 
                                Oahu, Waianae, forming reddish-brown, flattened-globose… | 
                                isotype | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Oscillatoria amphibia C.Agardh
                                 | 
                                M. G. Fanning 19 | 
                                1902 | 
                                United States of America | 
                                Texas | 
                                 | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Scytonema crispum (C.Agardh) Bornet
                                 | 
                                J. E. Tilden s.n. | 
                                03 Aug 1908 | 
                                United States of America | 
                                Minnesota | 
                                Washington Co. Lily Lake, floating… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Oscillatoria princeps Vaucher ex Gomont
                                 | 
                                C. F. Baker 4 | 
                                01 May 1896 | 
                                United States of America | 
                                Alabama | 
                                Lee Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Microcoleus chthonoplastes Thur. ex Gomont
                                 | 
                                M. G. Fanning 13 | 
                                1902 | 
                                United States of America | 
                                Texas | 
                                 | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phormidium retzii (C.Agardh) Kütz. ex Gomont
                                 | 
                                M. G. Fanning A | 
                                1902 | 
                                United States of America | 
                                Texas | 
                                 | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phormidium retzii (C.Agardh) Kütz. ex Gomont
                                 | 
                                C. F. Baker 5 | 
                                24 Mar 1897 | 
                                United States of America | 
                                Alabama | 
                                Lee Co. | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Oscillatoria bonnemaisonii (P.Crouan & H.Crouan) P.Crouan & H.Crouan
                                 | 
                                J. E. Tilden s.n. | 
                                19 Jul 1900 | 
                                United States of America | 
                                Hawaii | 
                                near Hilo, Seaconnot, floating in… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Oscillatoria limosa C.Agardh ex Gomont
                                 | 
                                M. G. Fanning 16 | 
                                1902 | 
                                United States of America | 
                                Texas | 
                                 | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Nostoc spongiaeforme C.Agardh
                                 | 
                                J. E. Tilden s.n. | 
                                Sep 1908 | 
                                United States of America | 
                                Minnesota | 
                                University of Minnesota, Botanical Department,… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Lyngbya martensiana Menegh.
                                 | 
                                W. A. Kellerman 5061 | 
                                28 Jan 1906 | 
                                Guatemala | 
                                — | 
                                Lake Amatitlan, on stems of… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phormidium valderianum Gomont
                                 | 
                                W. A. Kellerman 4304 | 
                                08 Feb 1905 | 
                                Guatemala | 
                                — | 
                                Lake Amatitlan, Laguna | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Phormidium uncinatum (C.Agardh ex Gomont) Gomont
                                 | 
                                W. A. Kellerman 5063 and 5067 | 
                                28 Jan 1906 | 
                                Guatemala | 
                                — | 
                                Lake Amatitlan, on rocks at… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Hapalosiphon fontinalis (C.Agardh) Bornet
                                 | 
                                W. H. Lippold s.n. | 
                                29 Sep 1904 | 
                                United States of America | 
                                Minnesota | 
                                Hennepin Co. near Campus, on… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Lyngbya lagerheimii Gomont
                                 | 
                                W. A. Kellerman 5068 | 
                                30 Jan 1906 | 
                                Guatemala | 
                                — | 
                                Lake Amatitlan, on stems and… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 | 
                            
                       
                        
                            
                            
                                | 
                                    Pleurococcus vulgaris Menegh.
                                 | 
                                W. A. Kellerman 5066 | 
                                01 Feb 1906 | 
                                Guatemala | 
                                — | 
                                Lake Amatitlan, on cedar planks… | 
                                — | 
                                 | 
                                 | 
                                
                                                                      
                                                                  | 
                                
                                    
                                 |