Displaying 1 - 25 out of 176 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Panax quinquefolius L. | C. D. Fretz | Sep 1867 | United States of America | Pennsylvania | Belmont | — | 198624 |
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| Anagallis arvensis L. | C. D. Fretz 1808 | 1873 | United States of America | Pennsylvania | Doylestown | — | 3591687 |
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| Viburnum prunifolium L. | C. D. Fretz s.n. | 1873 | United States of America | Pennsylvania | Bucks Co. | — | 2462946 |
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| Amelanchier canadensis (L.) Medik. | C. D. Fretz s.n. | May 1881 - Jun 1881 | United States of America | Pennsylvania | Bucks Co. | — | 2720400 |
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| Viola sagittata Aiton var. sagittata | C. D. Fretz No.2 | 05 May 1881 | United States of America | Pennsylvania | Bucks Co. | — | 3586199 |
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| Rubus cuneifolius Pursh | C. D. Fretz | Jun 1881 | United States of America | Pennsylvania | Bucks Co. | — | 2866160 |
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| Cyperus granitophilus McVaugh | C. D. Fretz 30408406 | 24 Aug 1881 | United States of America | New Jersey | New Germany | — | 2814639 |
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| Acer spicatum Lam. | C. D. Fretz s.n. | Jun 1882 | United States of America | Pennsylvania | Bucks Co. | — | 2490303 |
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| Viburnum cassinoides L. | C. D. Fretz s.n. | 15 Jun 1882 | United States of America | New Jersey | Atlantic Co. | — | 2459760 |
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| Zizia aptera (A.Gray) Fernald | C. D. Fretz | 10 Jul 1882 | United States of America | Pennsylvania | — | 3519879 |
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| Trollius laxus Salisb. | C. D. Fretz s.n. | 1882 | United States of America | Pennsylvania | Bucks Co. Springfield Township | — | 24340 |
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| Symphyotrichum cordifolium (L.) G.L.Nesom | C. D. Fretz s.n. | 1882 | United States of America | Pennsylvania | Bucks Co. Sellersville. [Inferred county… | — | 1845211 |
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| Robinia viscosa Vent. | C. D. Fretz | 1882 | United States of America | Pennsylvania | Bucks Co. | — | 2627870 |
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| Carex longii Mack. | C. D. Fretz 3242 | Jul 1883 | United States of America | New Jersey | Cape May Co. | — | 2287961 |
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| Carex grisea var. rigida L.H.Bailey | C. D. Fretz s.n. | 06 Jun 1884 | United States of America | Delaware | Faulkland | isosyntype | 39399 |
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| Crepis tectorum L. | C. D. Fretz s.n. | 1888 | United States of America | Pennsylvania | Bucks Co. | — | 2069606 |
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| Crataegus deducta Sarg. | C. D. Fretz 112 | 05 May 1889 (fl) - 02 Oct 1899 (fr) | United States of America | Pennsylvania | Bucks Co. Sellersville | syntype | 1043350 |
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| Carex virescens Muhl. ex Willd. | C. D. Fretz s.n. | 15 Jun 1896 | United States of America | Pennsylvania | Bucks Co. Rockhill. | — | 2309915 |
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| Symphyotrichum lateriflorum var. lateriflorum | C. D. Fretz s.n. | 05 Oct 1896 | United States of America | Pennsylvania | Bucks Co. | — | 1868756 |
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| Viola obliqua Hill | C. D. Fretz 1 | 03 May 1898 | United States of America | Pennsylvania | Bucks Co. | — | 3575501 |
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| Dichanthelium boscii (Poir.) Gould & C.A.Clark | C. D. Fretz 2 | 11 Jun 1898 | United States of America | Pennsylvania | Bucks Co. | — | 1709601 |
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| Vicia villosa Roth | C. D. Fretz s.n. | 11 Jun 1898 | United States of America | Pennsylvania | RR hawk, Penn Valley | — | 2611506 |
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| Crataegus deltoides Ashe | C. D. Fretz 103 | 12 May 1899 - 27 Sep 1899 | United States of America | Pennsylvania | Bucks Co. | — | 02733035 |
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| Crataegus macrosperma Ashe | C. D. Fretz 109 | 12 May 1899 - 13 Jun 1899 | United States of America | Pennsylvania | Bucks Co. | — | 2734933 |
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| Viola cucullata Aiton | C. D. Fretz s.n. | 20 May 1899 | United States of America | Pennsylvania | Bucks Co. | — | 3565135 |
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