Displaying 1 - 75 out of 556 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Acer negundo L. | A. MacElwee s.n. | 17 Jun 1893 | United States of America | Pennsylvania | 46th + Spruce, W. [Plula] | — | 2485339 |
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| Acer negundo L. | A. MacElwee 534 | 16 Jun 1899 | United States of America | Pennsylvania | Montgomery Co. West Manayunk | — | 2486710 |
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| Acer platanoides L. | A. MacElwee 928 | 24 Jul 1899 | United States of America | Pennsylvania | Delaware Co. Haverford Township | — | 2487541 |
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| Acer rubrum L. | A. MacElwee 107 | 04 May 1899 | United States of America | Pennsylvania | Delaware Co. Haverford Twp, N… | — | 2488209 |
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| Acer rubrum L. | A. MacElwee 17 | 20 Apr 1899 | United States of America | Pennsylvania | Delaware Co. | — | 2488238 |
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| Acer rubrum L. | A. MacElwee 2194 | 07 May 1901 | United States of America | New Jersey | Gloucester Co. | — | 2488262 |
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| Acer rubrum L. | A. MacElwee 347 | 29 May 1899 | United States of America | Pennsylvania | Bucks Co. Tullytown | — | 2488263 |
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| Acer rubrum L. | A. MacElwee 8 | 05 May 1894 | United States of America | New Jersey | Gloucester Co. | — | 2488264 |
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| Acer rubrum L. | A. MacElwee s.n. | 11 Apr 1893 | United States of America | Pennsylvania | Philadelphia Co. West Philadelphia | — | 2488265 |
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| Acer rubrum L. | A. MacElwee 2143 | 07 Apr 1901 | United States of America | Pennsylvania | Delaware Co. Cobb's Creek | — | 2488351 |
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| Acer saccharinum L. | A. MacElwee 2147 | 12 Apr 1901 | United States of America | Pennsylvania | West Philadelphia. Haddington. Woods. | — | 2488574 |
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| Acer saccharinum L. | A. MacElwee 2218 | 13 May 1901 | United States of America | Pennsylvania | West Philadelphia, woods, Haddington | — | 2488695 |
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| Acer saccharinum L. | A. MacElwee s.n. | 23 Apr 1899 | United States of America | Pennsylvania | Philadelphia Co. Along Cobbs Cr,… | — | 2488696 |
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| Acer saccharinum L. | A. MacElwee s.n. | 15 Apr 1899 | United States of America | Pennsylvania | Philadelphia Co. | — | 2488704 |
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| Acer saccharum Marshall | A. MacElwee 356 | 30 May 1899 | United States of America | Pennsylvania | Delaware Co. Haverford Twp. Along… | — | 2488972 |
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| Acer saccharum Marshall | A. MacElwee 356 | 30 May 1899 | United States of America | Pennsylvania | Delaware Co. Roadside, near Eagle… | — | 2489219 |
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| Acer saccharum Marshall | A. MacElwee 356 | 30 May 1899 | United States of America | Pennsylvania | Delaware Co. Roadside near Eagle… | — | 2489220 |
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| Agalinis maritima (Raf.) Raf. | A. MacElwee 2078 | 25 Sep 1900 | United States of America | New Jersey | Cape May Co. Five-mile Beach | — | 3250585 |
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| Agalinis purpurea (L.) Pennell var. purpurea | A. MacElwee 2005 | 25 Sep 1900 | United States of America | New Jersey | Cape May Co. Five-mile Beach | — | 3251237 |
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| Agrimonia parviflora Aiton | A. MacElwee 1880 | 23 Aug 1900 | United States of America | Pennsylvania | Delaware Co. Darby Creek, Haverford… | — | 2718598 |
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| Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. | A. MacElwee s.n. | 08 Jun 1902 | United States of America | Pennsylvania | Montgomery Co. Gwynedd. | — | 1555721 |
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| Agrostis perennans (Walter) Tuck. | A. MacElwee 1200 | 31 Aug 1899 | United States of America | Pennsylvania | Lancaster Co. Hartmans Island. Tucquan… | — | 1556907 |
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| Alnus glutinosa (L.) Gaertn. | A. MacElwee 2141 | 07 Apr 1901 | United States of America | Pennsylvania | Philadelphia Co. In swamps on… | — | 2471629 |
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| Alnus glutinosa (L.) Gaertn. | A. MacElwee 2141a | 24 Jun 1901 | United States of America | Pennsylvania | Philadelphia Co. Eastern Pennsylvania. In… | — | 2471634 |
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| Alnus glutinosa (L.) Gaertn. | A. MacElwee 1890a | 18 Apr 1901 | United States of America | Pennsylvania | Delaware Co. Along Darby Creek,… | — | 2471640 |
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| Alnus serrulata (Aiton) Willd. | A. MacElwee 2140 | 07 Apr 1901 | United States of America | Pennsylvania | Philadelphia Co. West Philadelphia, edge… | — | 2472765 |
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| Ammophila breviligulata Fernald | A. MacElwee 1391 | 02 Oct 1899 | United States of America | New Jersey | Cape May Co. Sand dunes… | — | 1638624 |
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| Andropogon glomeratus var. glomeratus | A. MacElwee s.n. | 02 Sep 1893 | United States of America | New Jersey | Ocean Co. Forked River. | — | 1639546 |
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| Andropogon glomeratus var. glomeratus | A. MacElwee 1571 | 13 Oct 1899 | United States of America | New Jersey | Burlington Co. New Lisbon | — | 1639549 |
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| Angelica villosa (Walter) Britton, Sterns & Poggenb. | A. MacElwee 1005 | 28 Jul 1899 | United States of America | Pennsylvania | Delaware Co. Williamson School, along… | — | 3366350 |
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| Antennaria howellii subsp. petaloidea (Fernald) R.J.Bayer | A. MacElwee 373 | June 2- 1899 | United States of America | Pennsylvania | Bucks Co. Rockhill | — | 1890502 |
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| Antennaria neglecta Greene | A. MacElwee 384 | 02 Jun 1899 | United States of America | Pennsylvania | Bucks Co. | — | 1891760 |
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| Antennaria parlinii subsp. fallax (Greene) R.J.Bayer & Stebbins | A. MacElwee 2198 | 07 May 1901 | United States of America | New Jersey | Gloucester Co. | — | 1878150 |
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| Antennaria parlinii subsp. fallax (Greene) R.J.Bayer & Stebbins | A. MacElwee 440 | 03 Jun 1899 | United States of America | Pennsylvania | Bucks Co. | — | 1878151 |
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| Anthoxanthum nitens (Weber) Y.Schouten & Veldkamp | A. MacElwee 147 | 10 May 1899 | United States of America | New Jersey | Cape May Co. Anglesea | — | 1641027 |
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| Apocynum cannabinum L. | A. MacElwee 1377 | 30 Sep 1899 | United States of America | Pennsylvania | Philadelphia Co. Near Overbrook | — | 4174662 |
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| Aralia nudicaulis L. | A. MacElwee s.n. | 05 Jul 1899 | United States of America | Pennsylvania | Montgomery Co. Willow Grove | — | 2558211 |
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| Aralia nudicaulis L. | A. MacElwee 346 | 29 May 1899 | United States of America | Pennsylvania | Bucks Co. Tullytown | — | 2558212 |
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| Arctium lappa L. | A. MacElwee 1301 | 23 Sep 1899 | United States of America | New Jersey | Camden Co. Along the Delaware… | — | 1896436 |
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| Arctostaphylos uva-ursi (L.) Spreng. | A. MacElwee 613 | 20 Jun 1899 | United States of America | New Jersey | Ocean Co. Davenport. | — | 2517785 |
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| Arctostaphylos uva-ursi (L.) Spreng. | A. MacElwee 613 | 20 Jun 1899 | United States of America | New Jersey | Ocean Co. At Davenport. | — | 2517897 |
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| Aristida dichotoma Michx. | A. MacElwee s.n. | 21 Sep 1894 | United States of America | New Jersey | Camden Co. near Haddonfield | — | 1473818 |
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| Aristida dichotoma Michx. | A. MacElwee | 08 Jun 1899 | United States of America | Pennsylvania | Delaware Co. | — | 1473878 |
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| Aristida dichotoma Michx. | A. MacElwee 1312 | 28 Sep 1899 | United States of America | Pennsylvania | Delaware Co. Along Darby Creek,… | — | 1473884 |
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| Aristida longespica Poir. | A. MacElwee 1566 | 13 Oct 1899 | United States of America | New Jersey | Burlington Co. | — | 1474598 |
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| Aristida longespica Poir. | A. MacElwee 1566 | 13 Oct 1899 | United States of America | New Jersey | Burlington Co. | — | 1467554 |
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| Aristida oligantha Michx. | A. MacElwee 1116 | — | United States of America | Maryland | Cecil Co. Along the shores… | — | 1557602 |
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| Aristida oligantha Michx. | A. MacElwee 1313 | 28 Sep 1899 | United States of America | Pennsylvania | Delaware Co. Along Darby Creek,… | — | 1557771 |
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| Aristida purpurascens Poir. | A. MacElwee 2106 | 11 Oct 1900 | United States of America | New Jersey | Camden Co. West Deptford | — | 1557962 |
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| Aristida purpurascens Poir. | A. MacElwee 1446 | 03 Oct 1899 | United States of America | New Jersey | Cape May Co. Five-Mile Beach | — | 1557984 |
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| Artemisia stelleriana Besser | A. MacElwee 1441 | — | United States of America | New Jersey | Cape May Co. On Five-Mile… | — | 1909051 |
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| Asclepias amplexicaulis L. | A. MacElwee 1084 | 14 Aug 1899 | United States of America | New Jersey | Atlantic Co. | — | 3492866 |
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| Asclepias amplexicaulis L. | A. MacElwee 654 | 21 Jun 1899 | United States of America | New Jersey | Ocean Co. | — | 3492867 |
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| Asclepias amplexicaulis L. | A. MacElwee s.n. | 22 Jun 1895 | United States of America | New Jersey | Ocean Co. | — | 3492993 |
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| Asclepias incarnata L. | A. MacElwee s.n. | 30 Jul 1895 | United States of America | New Jersey | Salem Co. Sharpstown | — | 3516797 |
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| Asclepias incarnata L. | A. MacElwee 892 | 20 Jul 1899 | United States of America | Pennsylvania | Philadelphia Co. Germantown | — | 3516827 |
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| Asclepias quadrifolia Jacq. | A. MacElwee 367 | 02 Jun 1899 | United States of America | Pennsylvania | Bucks Co. | — | 3528340 |
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| Asclepias quadrifolia Jacq. | A. MacElwee 367 | 02 Jun 1899 | United States of America | Pennsylvania | Bucks Co. | — | 3528347 |
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| Asclepias quadrifolia Jacq. | A. MacElwee 367 | 02 Jun 1899 | United States of America | Pennsylvania | Bucks Co. | — | 3528374 |
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| Asclepias tuberosa L. var. tuberosa | A. MacElwee 1071 | 14 Aug 1899 | United States of America | New Jersey | Atlantic Co. | — | 3529680 |
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| Asclepias verticillata L. | A. MacElwee 1503 | 09 Oct 1899 | United States of America | Pennsylvania | Delaware Co. Barrens near Newtown | — | 3535472 |
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| Asclepias verticillata L. | A. MacElwee | 28 Jul 1899 | United States of America | Pennsylvania | Delaware Co. | — | 3535473 |
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| Asclepias viridiflora Raf. | A. MacElwee 989 | 28 Jul 1899 | United States of America | Pennsylvania | Delaware Co. | — | 3535814 |
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| Aster tataricus L.f. | A. MacElwee s.n. | 08 Oct 1895 | United States of America | Pennsylvania | Philadelphia Co. West Philadelphia | — | 1897745 |
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| Avenella flexuosa (L.) Drejer | A. MacElwee 558 | 16 Jun 1899 | United States of America | Pennsylvania | Montgomery Co. West Manayunk | — | 1635230 |
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| Bidens cernua L. | A. MacElwee 1953 | 16 Sep 1900 | United States of America | Pennsylvania | along Indian Creek | — | 1925360 |
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| Bidens cernua L. | A. MacElwee 1329 | 28 Sep 1899 | United States of America | Pennsylvania | Delaware Co. Along Darby Creek,… | — | 1925519 |
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| Bidens connata Muhl. ex Willd. | A. MacElwee 2006 | 25 Sep 1900 | United States of America | New Jersey | Cape May Co. On Five-Mile… | — | 1911292 |
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| Bidens coronata (L.) Britton | A. MacElwee s.n. | 21 Sep 1894 | United States of America | New Jersey | Camden Co. Near Haddonfield | — | 1909247 |
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| Brachyelytrum erectum (Schreb.) P.Beauv. | A. MacElwee 856 | 13 Jul 1899 | United States of America | Pennsylvania | Delaware Co. Rocky woods above… | — | 1631066 |
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| Bromus kalmii A.Gray | A. MacElwee 855 | 13 Jul 1899 | United States of America | Pennsylvania | Delaware Co. Springfield Twp. | — | 1715572 |
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| Bromus sterilis L. | A. MacElwee 2257 | 28 Jun 1901 | United States of America | Pennsylvania | Montgomery Co. Norristown | — | 1644699 |
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| Bromus tectorum L. | A. MacElwee s.n. | 29 May 1896 | United States of America | New Jersey | Camden Co. | — | 664349 |
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| Bromus tectorum L. | A. MacElwee 295 | 24 May 1899 | United States of America | New Jersey | Camden Co. Along the P.… | — | 664368 |
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| Bromus tectorum L. | A. MacElwee 295 | 24 May 1899 | United States of America | New Jersey | Camden Co. Along P. &… | — | 664430 |
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