| 
                                    Callithamnion americanum Harv.
                                 | 
                                N. Pike s.n. | 
                                1867 | 
                                United States of America | 
                                New York | 
                                Long Island, Flushing Bay | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                27 Feb 1882 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                N. Pike s.n. | 
                                16 Apr 1880 | 
                                United States of America | 
                                New York | 
                                Queens Co. Whitestone | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                — | 
                                — | 
                                — | 
                                — | 
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                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                22 Mar 1873 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                15 Mar 1888 [?] | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                08 Apr 1882 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                17 Apr 1881 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                G. B. Brainerd s.n. | 
                                16 Mar 1867 | 
                                United States of America | 
                                New York | 
                                Long Island, Yellow Hook | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                N. Pike s.n. | 
                                14 Mar 1866 | 
                                United States of America | 
                                New York | 
                                Kings Co. Bay Ridge | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                15 Mar 1876 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                22 Mar 1873 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                28 Apr 1888 | 
                                United States of America | 
                                Massachusetts | 
                                Norfolk Co. | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                10 May | 
                                United States of America | 
                                Massachusetts | 
                                Norfolk Co. | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                25 May 1885 | 
                                United States of America | 
                                Massachusetts | 
                                Norfolk Co. | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                12 Mar 1875 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown 263 | 
                                15 Mar 1875 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                22 Feb 1881 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown 265 | 
                                05 Apr 1876 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                13 Feb 1876 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                14 Mar 1878 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                12 Apr 1875 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
                                 | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                06 Mar 1877 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
                                 | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                13 Feb 1876 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
                                 | 
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                                | 
                                    Callithamnion americanum Harv.
                                 | 
                                Collector unknown s.n. | 
                                15 Mar 1976 | 
                                United States of America | 
                                New York | 
                                Queens Co. College Point | 
                                — | 
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