Displaying 1 - 75 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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| 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 punctata Jacq. | C. D. Fretz | 23 May 1899 - 17 Jul 1899 | United States of America | Pennsylvania | Bucks Co. | — | 2748562 |
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| Packera crawfordii (Britton) A.M.Mahoney & R.R.Kowal | C. D. Fretz s.n. | 30 May 1899 | United States of America | Pennsylvania | Bucks Co. Near Tullytown | — | 02497298 |
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| Crataegus calpodendron (Ehrh.) Medik. | C. D. Fretz s.n. | 06 Jun 1899 - 24 Jul 1899 | United States of America | Pennsylvania | Bucks Co. | — | 2731870 |
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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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| Rosa blanda Aiton | C. D. Fretz s.n. | 19 Jun 1899 | United States of America | Pennsylvania | Bucks Co. | — | 2854979 |
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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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| Crataegus crus-galli L. | C. D. Fretz 28 | 10 Jul 1899 | United States of America | Pennsylvania | Bucks Co. | — | 2732885 |
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| Crataegus modica Sarg. | C. D. Fretz 109 | 11 Aug 1899 - 27 Sep 1899 | United States of America | Pennsylvania | Bucks Co. | — | 02747112 |
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| Crataegus nemoralis Sarg. | C. D. Fretz | 13 Aug 1899 - 16 Sep 1899 | United States of America | Pennsylvania | Bucks Co. | — | 02747529 |
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| Crataegus holmesiana var. villipes Ashe | C. D. Fretz 117 | 09 Sep 1899 | United States of America | Pennsylvania | Bucks Co. | — | 2734147 |
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| Crataegus tenella Ashe | C. D. Fretz 100 | 12 Sep 1899 | United States of America | Pennsylvania | Bucks Co. | — | 2778619 |
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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 canbyi Sarg. | C. D. Fretz 120 | 03 Oct 1899 | United States of America | Pennsylvania | Bucks Co. | — | 2731901 |
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| Crataegus nemoralis Sarg. | C. D. Fretz 121 | 03 Oct 1899 | United States of America | Pennsylvania | Bucks Co. | — | 02747528 |
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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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| Prunus maritima Marshall | C. D. Fretz | 13 May 1900 | United States of America | Pennsylvania | Bucks Co. | — | 2849930 |
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| Prunus | C. D. Fretz s.n. | 13 May 1900 | United States of America | Pennsylvania | Bucks Co. | — | 2853698 |
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| Crataegus saxatilis Sarg. | C. D. Fretz 204 | 21 May 1900 | United States of America | Pennsylvania | Bucks Co. Ridge Road, E.… | — | 02749170 |
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| Prunus | C. D. Fretz s.n. | 05 May 1901 | United States of America | Pennsylvania | Sellerville | — | 2853697 |
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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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| Tulipa sylvestris L. | C. D. Fretz | 7 May 1901 | United States of America | Pennsylvania | Bucks Co. Lonsdale about 10… | — | 3543958 |
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| Crataegus holmesiana Ashe | C. D. Fretz | 14 May 1901 - 12 Oct 1901 | United States of America | Pennsylvania | Bucks Co. | — | 02734121 |
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| Crataegus holmesiana Ashe | C. D. Fretz 114 | 14 May 1901 | United States of America | Pennsylvania | Bucks Co. | — | 2734139 |
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| Crataegus punctata Jacq. | C. D. Fretz 153 | 20 May 1901 - 24 Sep 1901 | United States of America | Pennsylvania | Bucks Co. | — | 2748678 |
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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 135 | 21 May 1901 | United States of America | Pennsylvania | Bucks Co. | — | 2731281 |
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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 jejuna Sarg. | C. D. Fretz 129 | 22 May 1901 | United States of America | Pennsylvania | Bucks Co. Gu gulley, Lusigs… | — | 02734394 |
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| Crataegus pruinosa (H.L.Wendl.) K.Koch | C. D. Fretz 137 | 22 May 1901 - 24 Sep 1903 | United States of America | Pennsylvania | Bucks Co. | — | 2748304 |
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| Crataegus tenella Ashe | C. D. Fretz 142 | 22 May 1901 | United States of America | Pennsylvania | Bucks Co. | — | 2778608 |
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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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| Crataegus nemoralis Sarg. | C. D. Fretz 118 | 28 May 1901 | United States of America | Pennsylvania | Bucks Co. | — | 02747525 |
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| Crataegus nemoralis Sarg. | C. D. Fretz 118 | 28 May 1901 - 24 Sep 1901 | United States of America | Pennsylvania | North Dellersville | — | 02747527 |
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| Crataegus canbyi Sarg. | C. D. Fretz | 30 May 1901 - 12 Oct 1901 | United States of America | Pennsylvania | Bucks Co. | — | 2731890 |
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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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| Crataegus succulenta Schrad. ex Link | C. D. Fretz 21 | 14 Jun 1901 - 24 Jul 1899 | United States of America | Pennsylvania | Bucks Co. | — | 2778502 |
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| Potentilla argentea L. | C. D. Fretz s.n. | 16 Jul 1901 | United States of America | Pennsylvania | Bucks Co. R.R. siding | — | 2829128 |
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| Viburnum prunifolium L. | C. D. Fretz s.n. | 23 Sep 1901 | United States of America | Pennsylvania | Bucks Co. near Sellersville | — | 2462947 |
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| Viburnum prunifolium L. | C. D. Fretz s.n. | 23 Sep 1901 | United States of America | Pennsylvania | near Sellersville | — | 2462948 |
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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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| Viola | C. D. Fretz s.n. | 04 Jun 1902 | United States of America | Pennsylvania | Montgomery Co. Franconia Township | — | 3591511 |
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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 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 fretzii Sarg. | C. D. Fretz 151 | 09 May 1903 - 29 Sep 1903 | United States of America | Pennsylvania | Bucks Co. | — | 02733786 |
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| Crataegus jesupii Sarg. | C. D. Fretz 172 | 11 May 1903 - 05 Oct 1903 | United States of America | Pennsylvania | Bucks Co. n. Sellersville | — | 2734410 |
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| Crataegus deltoides Ashe | C. D. Fretz 104 | 12 May 1903 - 27 Sep 1903 | United States of America | Pennsylvania | Bucks Co. N. Sellersville | — | 02733036 |
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