Displaying 1 - 50 out of 213 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Carex trisperma Dewey | J. W. Congdon s.n. | 20 Jul 1872 | Canada | Nova Scotia | Guysborough Co. | — | 2308087 |
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| Hieracium murorum L. | J. W. Congdon s.n. | 18 Jul 1873 | Canada | Quebec | Plains of Abraham | — | 2315133 |
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| Jepsonia heterandra Eastw. | J. W. Congdon s.n. | Oct 1883 | United States of America | California | Mariposa Co. Banks of Merced… | isotype | 186080 |
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| Jepsonia heterandra Eastw. | J. W. Congdon s.n. | Flowers Oct 1883; Leaves Apr 1884 | United States of America | California | Mariposa Co. Banks of Merced… | holotype fragment | 186081 |
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| Chamaecyparis thyoides (L.) Britton, Sterns & Poggenb. | J. W. Congdon s.n. | — | United States of America | Rhode Island | South Kingstown | — | 16458 |
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| Xyris smalliana Nash | J. W. Congdon s.n. | 13 Aug 1878 | United States of America | Rhode Island | Washington Co. South Kingstown. | — | 246862 |
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| Callitriche marginata Torr. | J. W. Congdon s.n. | Mar 1883 | United States of America | California | Merced Co. | — | 409598 |
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| Scirpus congdonii Britton | J. W. Congdon s.n. | 18 Aug 1895 | United States of America | California | Madera Co. Upper San Joaquin | type fragment | 51632 |
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| Lythrum salicaria L. | J. W. Congdon s.n. | 03 Jul 1877 | United States of America | Rhode Island | — | 365770 |
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| Lythrum salicaria L. | J. W. Congdon s.n. | 03 Jul 1877 | United States of America | Rhode Island | [Locality illegible on label] | — | 366266 |
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| Abies balsamea (L.) Mill. | J. W. Congdon s.n. | 30 Jun 1873 | United States of America | Vermont | [..., not legible handwriting] | — | 17782 |
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| Ptelea cycloloma Greene | J. W. Congdon s.n. | Jul 1893 | United States of America | California | Mariposa Co. Near Mariposa | syntype | 67075 |
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| Evax caulescens (Benth.) A.Gray | J. W. Congdon s.n. | Apr 1883 | United States of America | California | Mariposa Co. Agua Fria | — | 169297 |
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| Mimulus viscidus Congdon | J. W. Congdon s.n. | 21 Jun 1896 | United States of America | California | Mariposa Co. | lectotype | 90799 |
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| Euphorbia esula L. | J. W. Congdon | Jun 1870 | United States of America | Massachusetts | Essex Co. Merrimac River | — | 785228 |
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| Picea mariana (Mill.) Britton, Sterns & Poggenb. | J. W. Congdon s.n. | 17 Jul 1873 | United States of America | Vermont | Lyndon | — | 30299 |
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| Orthocarpus mariposanus Congdon | J. W. Congdon s.n. | Apr 1895 | United States of America | California | Mariposa Co. Agua Fria. | isotype | 90852 |
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| Orthocarpus mariposanus Congdon | J. W. Congdon 75 | Apr 1893 | United States of America | California | Mariposa Co. | possible type | 90853 |
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| Eatonella congdonii A.Gray | J. W. Congdon s.n. | Mar 1881 | United States of America | California | Tulare Co. Deer Creek | — | 31171 |
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| Castilleja montana Congdon | J. W. Congdon s.n. | 24 Aug 1895 | United States of America | California | Mariposa Co. | possible isotype | 68129 |
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| Picea glauca (Moench) Voss var. glauca | J. W. Congdon s.n. | 17 Jul 1879&30 Jul 1879 | United States of America | Vermont | Lyndon | — | 30232 |
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| Carex amplifolia Boott | J. W. Congdon s.n. | 11 Aug 1895 | United States of America | California | Mariposa Co. Big Tree Grove | — | 25683 |
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| Astragalus congdonii S.Watson | J. W. Congdon s.n. | 18 Mar 1883&30 May 1883 | United States of America | California | Mariposa Co. Hite's Cove [on… | probable isotype | 5363 |
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| Ribes congdonii A.Heller | J. W. Congdon s.n. | 10 Mar 1903 | United States of America | California | Mariposa Co. Below Mormon Bar | isotype | 185912 |
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| Sedum congdonii Eastw. | J. W. Congdon s.n. | 09 Apr 1898 | United States of America | California | Mariposa Co. Grants Springs. | isotype | 387989 |
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| Horkelia congdonis Rydb. | J. W. Congdon s.n. | 1895 | United States of America | California | Casa Diabolo. | isotype | 436010 |
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| Penstemon laetus A.Gray var. laetus | J. W. Congdon s.n. | 04 Jul 1890 | United States of America | California | Mariposa Co. Devil's Gulch | — | 604452 |
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| Eragrostis mexicana subsp. virescens (J.Presl) S.D.Koch & Sánchez Vega | J. W. Congdon s.n. | Sep 1881 | United States of America | California | Tulare Co. | — | 1683563 |
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| Astragalus bolanderi A.Gray | J. W. Congdon s.n. | 30 Jun 1885 | United States of America | California | Sonoma Co. Sand Plains. South… | — | 01244947 |
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| Astragalus bolanderi A.Gray | J. W. Congdon s.n. | 13 Aug 1896 | United States of America | California | Mariposa Co. Crescent Lake | — | 01244949 |
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| Astragalus douglasii (Torr. & A.Gray) A.Gray var. douglasii | J. W. Congdon s.n. | Jul 1881 | United States of America | California | Monterey Co. Salinas River bed | — | 01248686 |
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| Mimulus nanus var. mephiticus (Greene) D.M.Thomps. | J. W. Congdon C-74 | 18 Aug 1894 | United States of America | California | Mono Co. Mono Lake | — | 01246214 |
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| Achnatherum occidentale (Thurb. ex S.Watson) Barkworth | J. W. Congdon s.n. | 03 Oct 1896 | United States of America | California | Mariposa Co. Chihuahua Trail. | — | 1552980 |
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| Agrostis canina L. | J. W. Congdon s.n. | 04 Jul 1877 | United States of America | Rhode Island | South Kingston. R. I. | — | 1554508 |
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| Agrostis exarata Trin. | J. W. Congdon s.n. | Jul 1883 | United States of America | California | Mariposa Co. [Lunv Creele]. | — | 1555009 |
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| Arrhenatherum elatius (L.) P.Beauv. ex J.Presl & C.Presl | J. W. Congdon s.n. | 09 Jun 1878 | United States of America | Rhode Island | Kent Co. East Greenwich; near… | — | 1559154 |
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| Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev | J. W. Congdon s.n. | 24 Jul 1873 | United States of America | Rhode Island | East Greenwich. [Nillinghby]. | — | 1646898 |
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| Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev | J. W. Congdon s.n. | Jul 1843 | United States of America | Vermont | Willoughby Mountain | — | 1646900 |
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| Glyceria acutiflora Torr. | J. W. Congdon 1104 | June 9 [7877] | United States of America | Rhode Island | Providence? | — | 1774569 |
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| Glyceria R.Br. | J. W. Congdon s.n. | Mar 1881 | United States of America | California | Sonoma Co. Grass Deer Creek… | — | 1724457 |
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| Rhynchospora scirpoides (Torr.) Griseb. | J. W. Congdon s.n. | Sep 1872 | United States of America | Rhode Island | Providence Co. Lincoln | — | 1731565 |
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| Muhlenbergia sobolifera (Muhl. ex Willd.) Trin. | J. W. Congdon s.n. | 30 Sep 1877 | United States of America | Rhode Island | Johnston. | — | 1742001 |
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| Oryzopsis asperifolia Michx. | J. W. Congdon s.n. | 22 May 1873 | United States of America | Vermont | Lyndon. | — | 1759081 |
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| Paspalum setaceum var. psammophilum (Nash ex Hitchc.) D.J.Banks | J. W. Congdon s.n. | Aug- | United States of America | Rhode Island | Providence Co. Providence | — | 1762333 |
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| Piptatherum canadense (Poir.) Dorn | J. W. Congdon s.n. | 24 May 1873 | United States of America | New Hampshire | [New] London. | — | 1764020 |
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| Piptatherum canadense (Poir.) Dorn | J. W. Congdon 726 | 24 May 1873 | United States of America | New Hampshire | Merrimack Co. | — | 1764043 |
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| Piptochaetium avenaceum (L.) Parodi | J. W. Congdon 3419 | 10 Jun 1871 | United States of America | Rhode Island | Providence Co. | — | 1743716 |
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| Podagrostis thurberiana (Hitchc.) Hultén | J. W. Congdon s.n. | 11 Aug 1895 | United States of America | California | Mariposa. [Wawing]. | — | 1811706 |
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| Scribneria bolanderi (Thurb.) Hack. | J. W. Congdon s.n. | Jun 1885 | United States of America | California | Mariposa Co. | — | 1813809 |
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| Symphyotrichum x amethystinum (Nutt.) G.L.Nesom | J. W. Congdon 9076 | 18 Sep 1877 | United States of America | Rhode Island | Cumberland. | — | 1831888 |
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