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                                    Fimbrifolium dichotomum (Lepechin) G.I.Hansen
                                 | 
                                C. H. Clarke s.n. | 
                                Sep 1899 | 
                                United States of America | 
                                Massachusetts | 
                                Essex Co. Magnolia | 
                                — | 
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                                    Rhodophyllis dichotoma (Lepechin) Gobi
                                 | 
                                C. H. Clarke s.n. | 
                                Sep 1899 | 
                                United States of America | 
                                Massachusetts | 
                                Essex Co. Magnolia | 
                                — | 
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                                    Sargassum filipendula C.Agardh
                                 | 
                                C. Messina s.n. | 
                                s.d. | 
                                United States of America | 
                                Florida | 
                                Monroe Co. | 
                                — | 
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                                    Sargassum filipendula C.Agardh
                                 | 
                                C. Messina s.n. | 
                                s.d. | 
                                United States of America | 
                                Florida | 
                                Monroe Co. | 
                                — | 
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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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                                | 
                                    Ulva prolifera O.F.Müll.
                                 | 
                                D. A. Saunders s.n. | 
                                Nov 1898 | 
                                United States of America | 
                                Louisiana | 
                                on cypress logs floating in… | 
                                — | 
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                                | 
                                    Enteromorpha salina Kütz.
                                 | 
                                D. A. Saunders s.n. | 
                                Nov 1898 | 
                                United States of America | 
                                Louisiana | 
                                on cypress logs floating 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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                                | 
                                    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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                                | 
                                    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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                                | 
                                    Oedogonium landsboroughii Wittr. ex Hirn
                                 | 
                                F. S. Collins s.n. | 
                                02 Oct 1898 | 
                                United States of America | 
                                Massachusetts | 
                                Middlesex Co. floating in a… | 
                                — | 
                                 | 
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                                | 
                                    Oedogonium landsboroughii Wittr. ex Hirn
                                 | 
                                F. S. Collins s.n. | 
                                02 Oct 1898 | 
                                United States of America | 
                                Massachusetts | 
                                Middlesex Co. floating in a… | 
                                — | 
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                                | 
                                    Trentepohlia umbrina (Kütz.) Bornet
                                 | 
                                F. S. Collins s.n. | 
                                27 Mar 1898 | 
                                United States of America | 
                                Massachusetts | 
                                Essex Co. on bark of… | 
                                — | 
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                                | 
                                    Trentepohlia umbrina (Kütz.) Bornet
                                 | 
                                F. S. Collins s.n. | 
                                27 Mar 1898 | 
                                United States of America | 
                                Massachusetts | 
                                Essex Co. on bark of… | 
                                — | 
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                                | 
                                    Trentepohlia umbrina (Kütz.) Bornet
                                 | 
                                F. S. Collins s.n. | 
                                27 Mar 1898 | 
                                United States of America | 
                                Massachusetts | 
                                Essex Co. on bark of… | 
                                — | 
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                                | 
                                    Dictyosiphon hispidus (Kjellm.) Kjellm.
                                 | 
                                F. S. Collins s.n. | 
                                17 Jul 1898 | 
                                United States of America | 
                                Maine | 
                                Hancock Co. Penobscot Bay, Spectacle… | 
                                — | 
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                                | 
                                    Dictyosiphon foeniculaceus (Huds.) Grev.
                                 | 
                                F. S. Collins s.n. | 
                                17 Jul 1899 | 
                                United States of America | 
                                Maine | 
                                Hancock Co. Mount Desert Island,… | 
                                — | 
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