Displaying 1 - 50 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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| Trollius laxus Salisb. | C. D. Fretz s.n. | 1882 | United States of America | Pennsylvania | Bucks Co. Springfield Township | — | 24340 |
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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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| 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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| Crataegus pumila Sarg. | C. D. Fretz 139 | 22 Sep 1906 | United States of America | Pennsylvania | Bucks Co. Sellersville | syntype | 1043371 |
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| Crataegus saturata Sarg. | C. D. Fretz 110 | 19 May 1903 (fl) & 27 Sep 1899 (f) | United States of America | Pennsylvania | Bucks Co. Pleasant Spring bridge | isotype | 1043396 |
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| Crataegus longipetiolata Sarg. | C. D. Fretz 178 | 15 May 1903 - 14 Sep 1903 | United States of America | Pennsylvania | Bucks Co. N. [near] Sellersville,… | syntype | 1043458 |
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| Crataegus schweinitziana Sarg. | C. D. Fretz 119 | 16 Sep 1899 | United States of America | Pennsylvania | Bucks Co. Sellersville | syntype | 1085356 |
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| Crataegus schweinitziana Sarg. | C. D. Fretz 119 | May 1903 (fl) & 10 Sep 1903 (st) | United States of America | Pennsylvania | Bucks Co. Near Sellersville. | not a type | 1085357 |
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| Crataegus delicata Sarg. | C. D. Fretz 177 | 15 May 1903 (fl) - 14 Sep 1903 (fr) | United States of America | Pennsylvania | Bucks Co. Near Sellersville [from… | syntype | 1085363 |
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| Crataegus collinsiana Sarg. | C. D. Fretz 163 | 15 May 1903 (fl) & 14 Sep 1903 (fr) | United States of America | Pennsylvania | Bucks Co. Near Sellersville [from… | isotype | 1085364 |
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| Crataegus pygmaea Sarg. | C. D. Fretz 161 | 24 May 1905 | United States of America | Pennsylvania | Bucks Co. West Rockhill Twp.,… | — | 1085368 |
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| Crataegus pygmaea Sarg. | C. D. Fretz 161 | 25 Sep 1905, 22 May 1906 & 30 Aug 1907 | United States of America | Pennsylvania | Bucks Co. Sellersville | not a type | 1085367 |
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| Crataegus scabriuscula Sarg. | C. D. Fretz 170 | 09 May 1903 (fl) & 29 Sep 1903 (fr) | United States of America | Pennsylvania | Bucks Co. Durham | syntype | 1085371 |
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| Crataegus ruthiana Sarg. | C. D. Fretz 150 | 09 May 1903 (fl) | United States of America | Pennsylvania | Bucks Co. Durham | — | 1085372 |
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| Crataegus ruthiana Sarg. | C. D. Fretz 150 | 09 May 1903 & 29 Sep 1903 (fr) | United States of America | Pennsylvania | Bucks Co. Durham | not a type | 1085373 |
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| Crataegus rufipes Ashe | C. D. Fretz | 13 May 1903 (fl), 03 Jul 1903, & 19 Sep 1903 (fr) | United States of America | Pennsylvania | Bucks Co. Sellersville | not a type | 1085887 |
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| Eragrostis pectinacea (Michx.) Nees | C. D. Fretz s.n. | 17 Aug 1923 | United States of America | Pennsylvania | Bucks Co. Sellersville | — | 1699446 |
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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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| Crataegus ruthiana Sarg. | C. D. Fretz 149 | 24 Sep 1901 (fr) & 09 May 1903 (fl) | United States of America | Pennsylvania | Bucks Co. Durham | not a type | 02065569 |
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| Crataegus ruthiana Sarg. | C. D. Fretz 150 | 24 Sep 1901 | United States of America | Pennsylvania | Bucks Co. Limestone bluff, Durham… | not a type | 02065568 |
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| Crataegus firma Sarg. | C. D. Fretz 128 | 16 May 1903 (fl) - 19 Sep 1903 (fr, in packet) | United States of America | Pennsylvania | Bucks Co. Sellersville | not a type | 02065567 |
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| Crataegus firma Sarg. | C. D. Fretz 128 | 16 May 1903 (no flowering branches on this sheet) & 19 Sep 1903 (fr) | United States of America | Pennsylvania | Bucks Co. Sellersville | not a type | 02065566 |
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| Carex complanata Torr. & Hook. | C. D. Fretz s.n. | 19 Jun 1923 | United States of America | Pennsylvania | Bucks Co. Near Angus [=within… | — | 2259983 |
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| Carex granularis Muhl. ex Willd. | C. D. Fretz s.n. | 19 Jun 1923 | United States of America | Pennsylvania | Bucks Co. Ridge Valley churches,… | — | 2278682 |
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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 virescens Muhl. ex Willd. | C. D. Fretz s.n. | — | United States of America | Pennsylvania | Sellers hill. | — | 2309914 |
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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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| Solidago | C. D. Fretz 1301 | — | United States of America | Pennsylvania | Bucks Co. | — | 2374244 |
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| Polygonum tenue Michx. | C. D. Fretz 2412 | — | United States of America | Pennsylvania | Bucks Co. | — | 3152081 |
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| Polygonum tenue Michx. | C. D. Fretz 2298 | — | United States of America | Pennsylvania | Bucks Co. | — | 3152334 |
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| Stellaria graminea L. | C. D. Fretz s.n. | 23 Jun 1917 | United States of America | Pennsylvania | Bucks Co. Silverdale | — | 3327093 |
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| Oenothera fruticosa var. glauca (Michx.) H.Lév. | C. D. Fretz s.n. | 24 Jun 1899 | United States of America | Pennsylvania | Bucks Co. | — | 3352022 |
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| Asclepias viridiflora Raf. | C. D. Fretz s.n. | — | United States of America | Pennsylvania | Bucks Co. | — | 3535804 |
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| Tulipa sylvestris L. | C. D. Fretz | 7 May 1901 | United States of America | Pennsylvania | Bucks Co. Lonsdale about 10… | — | 3543958 |
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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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| Viola obliqua Hill | C. D. Fretz 1 | 03 May 1898 | United States of America | Pennsylvania | Bucks Co. | — | 3575501 |
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| Viola palmata L. | C. D. Fretz s.n. | 28 Apr 1921 | United States of America | Pennsylvania | Bucks Co. | — | 03575937 |
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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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| Viola sororia Willd. | C. D. Fretz | 10 May 1904 | United States of America | Pennsylvania | Bucks Co. | — | 3586817 |
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| Viola | C. D. Fretz s.n. | 04 Jun 1902 | United States of America | Pennsylvania | Montgomery Co. Franconia Township | — | 3591511 |
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| Anagallis arvensis L. | C. D. Fretz 1808 | 1873 | United States of America | Pennsylvania | Doylestown | — | 3591687 |
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| Corallorhiza odontorhiza var. pringlei (Greenm.) Stutz | C. D. Fretz 2816 | s.d. | United States of America | Pennsylvania | Bucks Co. Sellersville | — | 4028331 |
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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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| Adlumia fungosa (Aiton) Greene ex Britton, Sterns & Poggenb. | C. D. Fretz s.n. | s.d. | United States of America | Pennsylvania | Bucks Co. | — | 3703308 |
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| Eleusine indica (L.) Gaertn. | C. D. Fretz | 04 Aug 1915 | United States of America | Pennsylvania | Bucks Co. | — | 1698903 |
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| Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb. | C. D. Fretz 3491 | — | United States of America | Pennsylvania | Bucks Co. | — | 1682893 |
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| Bromus kalmii A.Gray | C. D. Fretz | 26 Jul 1923 | United States of America | Pennsylvania | Bucks Co. | — | 1318560 |
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| Bromus sterilis L. | C. D. Fretz s.n. | 14 Jun 1901 | United States of America | Pennsylvania | Bucks Co. | — | 1644698 |
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| Dichanthelium acuminatum (Sw.) Gould & C.A.Clark var. acuminatum | C. D. Fretz s.n. | 23 Jun 1921 | United States of America | Pennsylvania | Perkasie | — | 1591469 |
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