Displaying 1 - 41 out of 41 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Diphasiastrum digitatum (A.Braun) Holub | A. M. Isaacs s.n. | Aug 1888 | United States of America | New York | Lebanon Springs | — | 3504973 |
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| Lygodium japonicum (Thunb.) Sw. | A. M. Isaacs s.n. | Nov 1888 | United States of America | New York | New York Co. Cultivated -… | — | 03991765 |
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| Erigeron pulchellus Michx. | A. M. Isaacs | 15 May 1889 | United States of America | New York | Bronx Co. Hunt's Point | — | 2093729 |
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| Osmunda regalis L. | A. M. Isaacs s.n. | 14 Jun 1889 | United States of America | New York | New York Co. Ramble, Central… | — | 3553601 |
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| Lythrum salicaria L. | A. M. Isaacs s.n. | 09 Jul 1889 | United States of America | New York | Orange Co. Cornwall-on-Hudson | — | 365721 |
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| Acer rubrum L. | A. M. Isaacs s.n. | 14 Mar 1890 | United States of America | New York | New York Co. Central Park,… | — | 02377744 |
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| Acer platanoides L. | A. M. Isaacs s.n. | 19 Apr 1890 | United States of America | New York | New York Co. Central Park,… | — | 02377713 |
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| Acer pseudoplatanus L. | A. M. Isaacs s.n. | 18 May 1890 | United States of America | New York | New York Co. Central Park… | — | 02377721 |
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| Asclepias tuberosa L. | A. M. Isaacs s.n. | 14 Jul 1890 | United States of America | New York | Bronx Co. Van Cortlandt | — | 01264734 |
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| Athyrium filix-femina subsp. angustum (Willd.) R.T.Clausen | A. M. Isaacs s.n. | 22 Jul 1890 | United States of America | New York | Yonkers | — | 3909622 |
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| Solidago canadensis L. var. canadensis | A. M. Isaacs s.n. | 01 Aug 1890 | United States of America | New York | Westchester Co. | — | 2338232 |
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| Thelypteris palustris (A.Gray) Schott | A. M. Isaacs s.n. | 15 Aug 1890 | United States of America | New York | Westchester Co. | — | 3795570 |
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| Thelypteris hexagonoptera (Michx.) Weath. | A. M. Isaacs s.n. | 19 Aug 1890 | United States of America | New York | Westchester Co. | — | 3794570 |
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| Woodsia obtusa (Spreng.) Torr. | A. M. Isaacs s.n. | 21 Aug 1890 | United States of America | New York | Westchester Co. | — | 3810482 |
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| Dendrolycopodium obscurum (L.) A.Haines | A. M. Isaacs s.n. | Jul 1891 | United States of America | New York | Saratoga Springs | — | 3147964 |
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| Pinus rigida Mill. | A. M. Isaacs s.n. | Aug 1891 | United States of America | New York | Saratoga Springs | — | 62640 |
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| Symphyotrichum ericoides (L.) G.L.Nesom | A. M. Isaacs s.n. | 30 Sep 1892 | United States of America | New York | Ramble, near Schiller's Statue | — | 1847479 |
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| Osmunda claytoniana L. | A. M. Isaacs s.n. | 15 May 1893 | United States of America | New York | Bryn Mawr or Park Hill | — | 3235369 |
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| Osmunda claytoniana L. | A. M. Isaacs s.n. | 15 May 1893 | United States of America | New York | Bryn Mawr Park | — | 3235370 |
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| Osmunda claytoniana L. | A. M. Isaacs s.n. | 18 May 1893 | United States of America | New York | Bronx Co. Bronx Park | — | 3235310 |
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| Cystopteris tenuis (Michx.) Desv. | A. M. Isaacs s.n. | 28 Jun 1893 | United States of America | New York | Yonkers | — | 3800484 |
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| Cystopteris tenuis (Michx.) Desv. | A. M. Isaacs s.n. | 28 Jun 1893 | United States of America | New York | Yonkers | — | 3800485 |
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| Erigeron annuus (L.) Pers. | A. M. Isaacs s.n. | 01 Jul 1893 | United States of America | New York | Westchester Co. Yonkers | — | 2077107 |
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| Acer palmatum Thunb. | A. M. Isaacs s.n. | 04 Jul 1893 | United States of America | New York | Westchester Co. | — | 2487161 |
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| Polystichum acrostichoides (Michx.) Schott | A. M. Isaacs s.n. | 05 Jul 1893 | United States of America | New York | Park Hill | — | 3539119 |
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| Polypodium virginianum L. | A. M. Isaacs s.n. | 05 Jul 1893 | United States of America | New York | Park Hill | — | 3964921 |
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| Symphyotrichum patens (Aiton) G.L.Nesom var. patens | A. M. Isaacs s.n. | 03 Sep 1893 | United States of America | New York | Westchester Co. | — | 1853690 |
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| Lycopodium clavatum L. | A. M. Isaacs s.n. | 15 Aug 1895 | United States of America | Pennsylvania | Otter Lake | — | 3329731 |
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| Asplenium rhizophyllum L. | A. M. Isaacs s.n. | 29 Apr 1896 | United States of America | New York | Nipera Park | — | 3523612 |
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| Coronilla varia L. | A. M. Isaacs s.n. | 04 Jul 1896 | United States of America | New York | Westchester Co. | — | 2562865 |
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| Asplenium trichomanes L. | A. M. Isaacs s.n. | 01 May 1900 | United States of America | Pennsylvania | Diagueau's L. | — | 3523112 |
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| Laburnum vulgare J.Presl | A. M. Isaacs s.n. | 22 May 1989 | United States of America | New York | New York Co. Central Park | — | 02574699 |
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| Carex scirpoidea subsp. scirpoidea | A. M. Isaacs s.n. | — | — | — | White Mountains | — | 2302487 |
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| Solidago canadensis L. var. canadensis | A. M. Isaacs s.n. | 08 Sep 93 | United States of America | New Jersey | Bergen Co. | — | 2338277 |
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| Solidago rugosa Mill. var. rugosa | A. M. Isaacs s.n. | Sept. 8/94 | United States of America | New Jersey | Bergen Co. Alpine. | — | 2369706 |
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| Solidago sempervirens var. sempervirens | A. M. Isaacs s.n. | Sept. 8/93 | United States of America | New Jersey | Bergen Co. Shores of Hudson,… | — | 2371572 |
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| Juncus pylaei Laharpe | A. M. Isaacs s.n. | 21 Jul 93 | United States of America | New Jersey | Bergen Co. | — | 2398083 |
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| Kalmia latifolia var. latifolia | A. M. Isaacs s.n. | June 10/95 | — | — | — | 2524393 |
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| Juncus pylaei Laharpe | A. M. Isaacs s.n. | 7-25 | United States of America | New York | Bronx Co. Van Cortland | — | 2398031 |
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| Cornus racemosa Lam. | A. M. Isaacs s.n. | June 10 95 | — | — | — | 2505130 |
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| Carex emmonsii var. muhlenbergii (A.Gray ex Torr.) Rettig | A. M. Isaacs s.n. | — | United States of America | Michigan | — | 2275003 |
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