Displaying 1 - 25 out of 98 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Closterium acerosum Ehrenb. ex Ralfs | H. M. Richards 215 | 21 May 1893 | United States of America | Massachusetts | Middlesex Co. | — |
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| Zygnema pectinatum (Vaucher) C.Agardh | H. M. Richards s.n. | 06 Aug 1889 | United States of America | Pennsylvania | Chester Co. Oldmixon, in ditches | — |
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| Draparnaldia glomerata (Vaucher) C.Agardh | H. M. Richards s.n. | 24 Dec 1890 | United States of America | Pennsylvania | Chester Co. Oldminton, ditch by… | — |
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| Draparnaldia plumosa (Vaucher) C.Agardh | H. M. Richards s.n. | 23 Dec 1890 | United States of America | Pennsylvania | Chester Co. Oldminton | — |
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| Oedogonium fragile Wittr. ex Hirn | H. M. Richards s.n. | 19 May 1895 | United States of America | Massachusetts | Middlesex Co. Hammonds Pond | — |
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| Ulva flexuosa Wulfen | H. M. Richards s.n. | 14 Aug 1890 | United States of America | Rhode Island | Newport Co. | — |
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| Agardhiella subulata (C.Agardh) Kraft & M.J.Wynne | H. M. Richards s.n. | 23 Aug 1894 | United States of America | Rhode Island | Newport Co. Conanicut Island, Mackerel… | — |
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| Audouinella purpurea (Lightf.) Woelk. | H. M. Richards s.n. | 10 Mar 1889 | United States of America | Massachusetts | Essex Co. | — |
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| Batrachospermum helminthosum Bory | H. M. Richards s.n. | 1891 | United States of America | Massachusetts | Norfolk Co. | — |
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| Callithamnion byssoideum | H. M. Richards 37 | 10 Sep 1894 | United States of America | Rhode Island | Newport Co. | — |
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| Callithamnion seirospermum (Harv.) Harv. | H. M. Richards s.n. | 14 Aug 1890 | United States of America | Rhode Island | Newport Co. | — |
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| Champia parvula (C.Agardh) Harv. | H. M. Richards s.n. | 21 Jul 1890 | United States of America | Rhode Island | Newport Co. | — |
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| Champia parvula (C.Agardh) Harv. | H. M. Richards s.n. | 18 Jul 1891 | United States of America | Rhode Island | Newport Co. Sachuest Point | — |
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| Chondria dasyphylla (Woodw.) C.Agardh | H. M. Richards s.n. | 10 Jul 1890 | United States of America | Rhode Island | Newport Co. | — |
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| Agardhiella tenera (J.Agardh) F.Schmitz | H. M. Richards s.n. | 30 Jul 1890 | United States of America | Rhode Island | Newport Co. | — |
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| Polyides rotunda (Huds.) Gaillon | H. M. Richards s.n. | Dec 1890 | United States of America | Rhode Island | Newport Co. | — |
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| Polysiphonia fastigiata (Roth) Grev. | H. M. Richards 72 | 11 Mar 1889 | United States of America | Massachusetts | Essex Co. Nahant | — |
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| Polysiphonia fibrillosa (Dillwyn) Spreng. | H. M. Richards 227 | 24 Jul 1893 | United States of America | Rhode Island | Newport Co. Newport | — |
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| Polysiphonia fibrillosa (Dillwyn) Spreng. | H. M. Richards 228 | 24 Jul 1893 | United States of America | Rhode Island | Newport Co. Newport | — |
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| Polysiphonia nigrescens (Huds.) Grev. ex Harv. | H. M. Richards 99 | 06 Apr 1891 | United States of America | Rhode Island | Newport Co. Coddington Cove | — |
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| Callithamnion seirospermum (Harv.) Harv. | H. M. Richards 305 | Jul 1891 | United States of America | Rhode Island | Newport Co. | — |
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| Polysiphonia violacea (Roth) Spreng. | H. M. Richards s.n. | 22 Jul 1892 | United States of America | Rhode Island | Newport Co. Easton's Point | — |
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| Polysiphonia violacea (Roth) Spreng. | H. M. Richards s.n. | 22 Jul 1892 | United States of America | Rhode Island | Newport Co. Easton's Point | — |
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| Ptilota elegans Bonnem. | H. M. Richards 86 | 31 Jan 1891 | United States of America | Rhode Island | Newport Co. | — |
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| Ptilota elegans Bonnem. | H. M. Richards 86 | Jan 1891 | United States of America | Rhode Island | Newport Co. | — |
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