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                                    Coccocladus occidentalis (Harv.) C.E.Cramer
                                 | 
                                C. O. E. Hansen s.n. | 
                                1889 | 
                                Virgin Islands (U.S.) | 
                                Saint Croix | 
                                in lagoons | 
                                — | 
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                                    Botryophora occidentalis (Harv.) J.Agardh
                                 | 
                                C. O. E. Hansen s.n. | 
                                1889 | 
                                Virgin Islands (U.S.) | 
                                Saint Croix | 
                                in lagoons | 
                                — | 
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                                    Botryophora occidentalis (Harv.) J.Agardh
                                 | 
                                C. O. E. Hansen s.n. | 
                                1889 | 
                                Virgin Islands (U.S.) | 
                                Saint Croix | 
                                in lagoons | 
                                — | 
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                                    Dictyosiphon foeniculaceus var. americanus Collins
                                 | 
                                I. Holden s.n. | 
                                Apr 1891 | 
                                United States of America | 
                                Connecticut | 
                                Fairfield Co. in marsh pool,… | 
                                type | 
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                                    Scytonema crispum (C.Agardh) Bornet
                                 | 
                                W. A. Setchell s.n. | 
                                Oct 1891 | 
                                United States of America | 
                                Connecticut | 
                                New Haven Co. forming extensive… | 
                                — | 
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                                    Stigeoclonium tenue (Dillwyn) Rabenh.
                                 | 
                                I. Holden s.n. | 
                                14 May 1893 | 
                                United States of America | 
                                Connecticut | 
                                Fairfield Co. on submerged plants… | 
                                — | 
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                                    Symploca thermalis Kütz. ex Gomont
                                 | 
                                I. Holden s.n. | 
                                23 Jun 1893 | 
                                United States of America | 
                                New York | 
                                Schenectady Co. in hot water… | 
                                — | 
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                                    Pylaiella littoralis (L.) Kjellm.
                                 | 
                                F. S. Collins s.n. | 
                                18 Jul 1893 | 
                                United States of America | 
                                Maine | 
                                Hancock Co. Penobscot Bay, Buck's… | 
                                — | 
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                                    Pylaiella littoralis var. varia (Kjellm.) Kuck.
                                 | 
                                F. S. Collins s.n. | 
                                18 Jul 1893 | 
                                United States of America | 
                                Maine | 
                                Hancock Co. Penobscot Bay, Buck's… | 
                                — | 
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                                    Oscillatoria tenuis var. tergestina Rabenh. ex Gomont
                                 | 
                                W. A. Setchell | W. J. V. Osterhout s.n. | 
                                28 Mar 1894 | 
                                United States of America | 
                                California | 
                                Alameda Co. in warm water… | 
                                — | 
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                                | 
                                    Ectocarpus confervoides f. irregularis Collins
                                 | 
                                F. S. Collins s.n. | 
                                Jul 1894 | 
                                United States of America | 
                                Maine | 
                                Hancock Co. Penobscot Bay, Spectacle… | 
                                type | 
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                                    Ectocarpus confervoides f. irregularis Collins
                                 | 
                                F. S. Collins s.n. | 
                                Jul 1894 | 
                                United States of America | 
                                Maine | 
                                Hancock Co. Penobscot Bay, Spectacle… | 
                                type | 
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                                    Ectocarpus confervoides f. irregularis Collins
                                 | 
                                F. S. Collins s.n. | 
                                Jul 1894 | 
                                United States of America | 
                                Maine | 
                                Hancock Co. Penobscot Bay, Spectacle… | 
                                type | 
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                                    Nostoc pruniforme C.Agardh
                                 | 
                                I. Holden s.n. | 
                                25 Aug 1895 | 
                                United States of America | 
                                Connecticut | 
                                Litchfield Co. in a stagnant… | 
                                — | 
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                                | 
                                    Caulerpa verticillata J.Agardh
                                 | 
                                F. C. E. Børgesen s.n. | 
                                Jan 1896 | 
                                Virgin Islands (U.S.) | 
                                Saint Croix | 
                                in lagoons, growing on roots… | 
                                — | 
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                                | 
                                    Neomeris annulata Dickie
                                 | 
                                F. C. E. Børgesen s.n. | 
                                Jan 1896 | 
                                Virgin Islands (U.S.) | 
                                Saint Thomas | 
                                harbor of St. Thomas, in… | 
                                — | 
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                                    Neomeris dumetosa J.V.Lamour.
                                 | 
                                F. C. E. Børgesen s.n. | 
                                Jan 1896 | 
                                Virgin Islands (U.S.) | 
                                Saint Thomas | 
                                harbor of St. Thomas, in… | 
                                — | 
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                                    Caulerpa verticillata J.Agardh
                                 | 
                                F. C. E. Børgesen s.n. | 
                                Jan 1896 | 
                                Virgin Islands (U.S.) | 
                                Saint Croix | 
                                in lagoons, growing on roots… | 
                                — | 
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                                | 
                                    Gelidium rigidum (C.Agardh) Grev.
                                 | 
                                F. C. E. Børgesen s.n. | 
                                Jan 1896 | 
                                Virgin Islands (U.S.) | 
                                Saint Croix | 
                                near the shore, creeping over… | 
                                — | 
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                                    Neomeris dumetosa J.V.Lamour.
                                 | 
                                F. C. E. Børgesen s.n. | 
                                Jan 1896 | 
                                Virgin Islands (U.S.) | 
                                Saint Thomas | 
                                harbor of St. Thomas, in… | 
                                — | 
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                                    Gelidium rigidum (C.Agardh) Grev.
                                 | 
                                F. C. E. Børgesen s.n. | 
                                Jan 1896 | 
                                Virgin Islands (U.S.) | 
                                Saint Croix | 
                                near the shore, creeping over… | 
                                — | 
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                                | 
                                    Gelidium rigidum (C.Agardh) Grev.
                                 | 
                                F. C. E. Børgesen s.n. | 
                                Jan 1896 | 
                                Virgin Islands (U.S.) | 
                                Saint Croix | 
                                near the shore, creeping over… | 
                                — | 
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                                | 
                                    Phormidium papyraceum (C.Agardh) Kütz.
                                 | 
                                F. S. Collins s.n. | 
                                26 Apr 1896 | 
                                United States of America | 
                                Massachusetts | 
                                Middlesex Co. in brook on… | 
                                — | 
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                                | 
                                    Dictyosiphon hippuroides (Lyngb.) Kütz.
                                 | 
                                F. S. Collins s.n. | 
                                Jul 1896 | 
                                United States of America | 
                                Maine | 
                                Penobscot Bay, Spectacle Island, in… | 
                                — | 
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                                | 
                                    Anabaena oscillarioides Bory
                                 | 
                                J. E. Humphrey s.n. | 
                                17 Aug 1896 | 
                                United States of America | 
                                Massachusetts | 
                                Barnstable Co. West Falmouth, in… | 
                                — | 
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