Displaying 1 - 75 out of 1044 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Oscillatoria tenuis C.Agardh ex Gomont | I. Holden s.n. | 05 Oct 1890 | United States of America | Connecticut | Fairfield Co. Bruce's Brook | — |
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| Oscillatoria tenuis C.Agardh ex Gomont | I. Holden s.n. | s.d. | United States of America | Connecticut | Fairfield Co. Pequonnock River | — |
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| Batrachospermum vagum var. flagelliforme f. tenuissima Collins | I. Holden s.n. | 24 Aug 1896 | United States of America | New York | Hamilton Co. Adirondack Mountains, near… | type |
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| Spirogyra porticalis f. minor Collins | I. Holden s.n. | 08 May 1892 | United States of America | Connecticut | Fairfield Co. among other (sterile)… | type |
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| Didymoprium grevillei | I. Holden s.n. | 11 May 1890 | United States of America | Connecticut | Fairfield Co. Stillman's Pond | — |
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| Didymoprium grevillei | I. Holden s.n. | 11 May 1890 | United States of America | Connecticut | Fairfield Co. Stillman's Pond | — |
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| Mougeotia genuflexa (Roth) C.Agardh | I. Holden 668 | 02 Aug 1892 | United States of America | Connecticut | Fairfield Co. Peck's Mill Pond,… | — |
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| Mougeotia genuflexa (Roth) C.Agardh | I. Holden s.n. | 01 Jul 1894 | United States of America | Connecticut | Fairfield Co. Putney, Peck's Mill… | — |
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| Mougeotia genuflexa (Roth) C.Agardh | I. Holden s.n. | 01 Jul 1894 | United States of America | Connecticut | Fairfield Co. Putney, Peck's Mill… | — |
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| Mougeotia genuflexa (Roth) C.Agardh | I. Holden s.n. | 01 Jul 1894 | United States of America | Connecticut | Fairfield Co. Putney, Peck's Mill… | — |
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| Mougeotia robusta (de Bary) Wittr. | I. Holden s.n. | 05 Jun 1892 | United States of America | Connecticut | Fairfield Co. Pequonnock River | — |
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| Spirogyra nitida | I. Holden 643 | 19 Jul 1892 | — | — | Factory Pond Darun [?] | — |
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| Zygogonium anomalum Kütz. | I. Holden s.n. | 12 Jun 1892 | United States of America | Connecticut | Fairfield Co. Pequonnock River | — |
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| Porphyra leucosticta Thur. | I. Holden s.n. | 18 Apr 1897 | United States of America | Connecticut | Bridgeport Harbor | — |
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| Porphyra leucosticta Thur. | I. Holden s.n. | 26 Mar 1890 | United States of America | Connecticut | Fairfield Co. Sea Side Park | — |
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| Porphyra leucosticta Thur. | I. Holden | 18 Apr 1897 | United States of America | Connecticut | Bridgeport Harbor | — |
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| Porphyra leucosticta Thur. | I. Holden | 12 Feb 1891 | United States of America | New Jersey | Seaside Park | — |
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| Porphyra leucosticta Thur. | I. Holden 1081 | 14 Apr 1895 | United States of America | — | Cook's Point | — |
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| Porphyra miniata (C.Agardh) C.Agardh | I. Holden s.n. | 27 Jul 1897 | Canada | Newfoundland and Labrador | St. John's, just within the… | — |
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| Porphyra purpurea (Roth) C.Agardh | I. Holden s.n. | 26 Aug 1888 | United States of America | Connecticut | Thimble Island | — |
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| Bangia fuscopurpurea (Dillwyn) Lyngb. | I. Holden 129 | 11 Aug 1890 | United States of America | Maine | Hancock Co. Mount Desert, Seal… | — |
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| Bangia fuscopurpurea (Dillwyn) Lyngb. | I. Holden s.n. | 30 Nov 1893 | United States of America | Connecticut | Fairfield Co. between tide marks | — |
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| Chaetophora pisiformis (Roth) C.Agardh | I. Holden s.n. | 26 Jun 1892 | — | — | — |
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| Draparnaldia glomerata (Vaucher) C.Agardh | I. Holden s.n. | s.d. | — | — | at first attached to sticks,… | — |
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| Draparnaldia plumosa (Vaucher) C.Agardh | I. Holden s.n. | 14 Feb 1892 | United States of America | Connecticut | Fairfield Co. attached to stones… | — |
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| Microspora amoena (Kütz.) Rabenh. | I. Holden s.n. | — | Unknown | — | [illegible] | — |
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| Oedogonium boscii Wittr. ex Hirn | I. Holden s.n. | 02 Jul 1893 | United States of America | Connecticut | Fairfield Co. on submerged plants… | — |
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| Oedogonium boscii Wittr. ex Hirn | I. Holden s.n. | 02 Jul 1893 | United States of America | Connecticut | Fairfield Co. on submerged plants… | — |
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| Stigeoclonium elongatum (Hassall) Kütz. | I. Holden s.n. | s.d. | — | — | — |
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| Stigeoclonium flagelliferum Kütz. | I. Holden s.n. | 25 Dec 1895 | United States of America | Connecticut | Fairfield Co. Pequonnock River | — |
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| Stigeoclonium flagelliferum Kütz. | I. Holden 1171 | 22 Dec 1895 | United States of America | Connecticut | Fairfield Co. Pequonnock River | — |
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| Chaetomorpha linum (O.F.Müll.) Kütz. | I. Holden 688 | 13 Aug 1892 | United States of America | Connecticut | Fairfield Co. | — |
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| Chaetomorpha linum (O.F.Müll.) Kütz. | I. Holden s.n. | 13 Aug 1892 | United States of America | Connecticut | Fairfield Co. on rocks and… | — |
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| Cladophora gracilis (A.W.Griffiths) Kütz. | I. Holden 357 | 10 Jul 1891 | — | — | [illegible] Pond | — |
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| Spongomorpha arcta (Dillwyn) Kütz. | I. Holden 1275 | 13 Jul 1897 | Canada | Newfoundland and Labrador | St. John's | — |
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| Spongomorpha arcta (Dillwyn) Kütz. | I. Holden 1276 | 13 Jul 1897 | Canada | Newfoundland and Labrador | St. John's | — |
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| Spongomorpha uncialis (O.F.Müll.) Kütz. | I. Holden s.n. | 20 Jun 1885 | — | — | Middle Ground Light | — |
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| Spongomorpha uncialis (O.F.Müll.) Kütz. | I. Holden s.n. | 19 Jun 1887 | United States of America | — | Middle Ground Light, Long Island… | — |
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| Spongomorpha uncialis (O.F.Müll.) Kütz. | I. Holden s.n. | 19 Jun 1887 | United States of America | — | Middle Ground Light, Long Island… | — |
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| Trentepohlia aurea (L.) Mart. | I. Holden s.n. | 09 Oct 1898 | United States of America | Connecticut | Litchfield Co. near Gaylordsville, on… | — |
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| Ulothrix | I. Holden 657 | 25 Jul 1892 | United States of America | Connecticut | Fairfield Co. Pequonnock River | — |
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| Ulothrix implexa (Kütz.) Kütz. | I. Holden 565 | 03 Apr 1891 | — | — | [illegible] | — |
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| Ulothrix penicilliformis (Roth) A.Braun | I. Holden s.n. | — | — | — | Newfoundland | — |
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| Ulothrix zonata (F.Weber & D.Mohr) Kütz. | I. Holden s.n. | 03 Jan 1894 | United States of America | Connecticut | Fairfield Co. Mill River, abundant… | — |
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| Ulothrix zonata (F.Weber & D.Mohr) Kütz. | I. Holden s.n. | 03 Jan 1894 | United States of America | Connecticut | Fairfield Co. Mill River, abundant… | — |
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| Ulva compressa L. | I. Holden s.n. | 06 Aug 1890 | United States of America | Maine | Sames Sound, Mt. Desert | — |
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| Ulva flexuosa Wulfen | I. Holden 1001 | 15 Aug 1894 | United States of America | Massachusetts | Barnstable Co. Woods Hole | — |
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| Ulva linza L. | I. Holden s.n. | 26 Jul 1891 | United States of America | Connecticut | Fairfield Co. Long Beach | — |
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| Ulva linza L. | I. Holden 821 | 19 May 1893 | — | — | Seaside Park | — |
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| Ulva prolifera O.F.Müll. | I. Holden s.n. | 21 May 1893 | — | — | Yellow mill Pond | — |
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| Ulva prolifera O.F.Müll. | I. Holden s.n. | 11 Jun 1873 | United States of America | Connecticut | Fairfield Co. Bridgeport Harbor | — |
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| Ulva prolifera O.F.Müll. | I. Holden s.n. | 30 May 1891 | United States of America | Connecticut | Fairfield Co. | — |
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| Acrochaetium sagraeanum (Mont.) Bornet | I. Holden s.n. | — | United States of America | Connecticut | Fairfield Co. | — |
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| Antithamnion cruciatum (C.Agardh) Nägeli | I. Holden s.n. | 13 Dec 1891 | — | — | Bridgeport [illegible] | — |
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| Antithamnion cruciatum (C.Agardh) Nägeli | I. Holden s.n. | — | — | — | Bridgeport [illegible] | — |
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| Batrachospermum | I. Holden s.n. | 09 May 1886 | United States of America | Connecticut | Fairfield Co. | — |
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| Batrachospermum densum Sirodot | I. Holden 105 | 07 Aug 1890 | United States of America | Maine | Mt. Desert Island, outlet of… | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | 06 May 1893 | United States of America | Connecticut | Fairfield Co. on dead sticks… | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | 02 Aug 1890 | United States of America | Maine | Hancock Co. Southwest Harbor | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden 87 | 16 Mar 1890 | United States of America | Massachusetts | Middlesex Fells | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | 26 Jan 1890 | United States of America | Connecticut | Fairfield Co. Pequonnock River | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | 11 May 1890 | United States of America | Connecticut | Fairfield Co. on sticks and… | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | 11 May 1890 | United States of America | Connecticut | Fairfield Co. on sticks and… | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | s.d. | United States of America | Connecticut | Fairfield Co. in a brook | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | 07 Dec 1890 | United States of America | Connecticut | Fairfield Co. Pequonnock River | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | 27 Oct 1889 | United States of America | Connecticut | Fairfield Co. Pequonnock River | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | s.d. | United States of America | Connecticut | Fairfield Co. in a brook | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | s.d. | United States of America | Connecticut | Fairfield Co. in a brook | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | s.d. | United States of America | Connecticut | Fairfield Co. on sticks and… | — |
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| Batrachospermum gelatinosum (L.) DC. | I. Holden s.n. | s.d. | United States of America | Connecticut | Fairfield Co. in a brook | — |
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| Batrachospermum keratophytum Bory | I. Holden s.n. | 24 Dec 1893 | United States of America | Connecticut | Fairfield Co. on submerged alder… | — |
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| Batrachospermum keratophytum Bory | I. Holden s.n. | 09 Jul 1892 | United States of America | Connecticut | Fairfield Co. on submerged alder… | — |
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| Batrachospermum turfosum Bory | I. Holden 1207 | 17 Aug 1896 | United States of America | New York | Hamilton Co. Pisces | — |
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| Batrachospermum turfosum Bory | I. Holden s.n. | 24 Aug 1896 | United States of America | New York | Hamilton Co. Adirondack Mountains, near… | — |
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| Callithamnion baileyi Harv. | I. Holden s.n. | s.d. | United States of America | Connecticut | Fairfield Co. Bridgeport | — |
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