Displaying 26 - 75 out of 176 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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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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| Dichanthelium acuminatum (Sw.) Gould & C.A.Clark var. acuminatum | C. D. Fretz 4 | 17 Jun 1899 | United States of America | Pennsylvania | Bucks Co. | — | 1592236 |
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| Dichanthelium boscii (Poir.) Gould & C.A.Clark | C. D. Fretz | 23 Jul 1917 | United States of America | Pennsylvania | Bucks Co. | — | 1709589 |
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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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| Sphenopholis obtusata (Michx.) Scribn. | C. D. Fretz s.n. | 07 Jul 1917 | United States of America | Pennsylvania | Montgomery Co. near Hartfield | — | 1787837 |
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| Symphyotrichum ericoides (L.) G.L.Nesom | C. D. Fretz s.n. | 29 Sep 1923 | United States of America | Pennsylvania | Bucks Co. 2 miles south… | — | 1847068 |
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| Eurybia macrophylla (L.) Cass. | C. D. Fretz s.n. | 05 Oct 1899 | United States of America | Pennsylvania | Bucks Co. | — | 1859519 |
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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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| Crepis tectorum L. | C. D. Fretz s.n. | 1888 | United States of America | Pennsylvania | Bucks Co. | — | 2069606 |
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| Lespedeza virginica (L.) Britton | C. D. Fretz s.n. | 06 Sep 1924 | United States of America | Pennsylvania | Bucks Co. near Sellersville | — | 2580984 |
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| Vicia villosa Roth | C. D. Fretz s.n. | 04 Jun 1916 | United States of America | Pennsylvania | near Perkasie | — | 2611439 |
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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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| Robinia viscosa Vent. | C. D. Fretz | 1882 | United States of America | Pennsylvania | Bucks Co. | — | 2627870 |
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| Waldsteinia fragarioides var. fragarioides | C. D. Fretz s.n. | 10 May 1915 | United States of America | Pennsylvania | Bucks Co. | — | 2720451 |
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| Waldsteinia fragarioides var. fragarioides | C. D. Fretz | 23 May 1914 | United States of America | Pennsylvania | Bucks Co. | — | 2720452 |
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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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| Crataegus abjecta Sarg. | C. D. Fretz 108type | May 28, July 3, Sep 19, 1903 | United States of America | Pennsylvania | Bucks Co. | — | 2731008 |
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| Crataegus alacris Sarg. | C. D. Fretz 125 | 16 May 1903 - 21 Sep 1903 | United States of America | Pennsylvania | Deep Run | — | 02731079 |
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| Crataegus apposita Sarg. | C. D. Fretz 196 | 30 Sep 1904 - 02 Oct 1904 | United States of America | Pennsylvania | Bucks Co. Deep Rum | — | 2731219 |
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| Crataegus arcana Beadle | C. D. Fretz 141 | 22 May 1901 - 22 Sep 1903 | United States of America | Pennsylvania | Lawrence Co. | — | 2731268 |
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| Crataegus arcuata Ashe | C. D. Fretz 135 | 21 May 1901 - 19 Jun 1906 | United States of America | Pennsylvania | Bucks Co. | — | 2731272 |
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| Crataegus arcuata Ashe | C. D. Fretz 146 | 06 May 1901 - 10 Sep 1901 | United States of America | Pennsylvania | Bucks Co. | — | 2731280 |
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| Crataegus arcuata Ashe | C. D. Fretz 135 | 21 May 1901 | United States of America | Pennsylvania | Bucks Co. | — | 2731281 |
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| Crataegus arcuata Ashe | C. D. Fretz 203 | 17 Sep 1907 | United States of America | Pennsylvania | Bucks Co. Pekarie | — | 2731282 |
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| Crataegus austera Sarg. | C. D. Fretz 102 | 23 May 1899 - 27 Sep 1899 | United States of America | Pennsylvania | Bucks Co. | — | 02731378 |
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| Crataegus biltmoreana Beadle | C. D. Fretz | 28 May 1901 - 23 Sep 1901 | United States of America | Pennsylvania | Bucks Co. | — | 2731520 |
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