Displaying 1 - 75 out of 1600 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Poa trivialis L. | T. J. Howell s.n. | May 1831 | United States of America | Oregon | Multnomah Co. In forests near… | — |
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| Anemone occidentalis S.Watson | T. J. Howell s.n. | Aug 1831 | United States of America | Oregon | Mount Hood near the snow… | — |
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| Canadanthus modestus (Lindl.) G.L.Nesom | T. J. Howell s.n. | Aug 1850 | United States of America | — | Pacific Coast. Cascade Mts. | — |
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| Streptanthus howellii S.Watson | T. J. Howell s.n. | 08 Jun 1854 | United States of America | Oregon | Cost Mountains; fortieth parallel | isotype |
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| Streptanthus howellii S.Watson | T. J. Howell s.n. | 08 Jun 1854 | United States of America | Oregon | Cost Mountains; fortieth parallel | isotype |
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| Funaria hygrometrica var. convoluta (Hampe) Grout | T. J. Howell | Jun 1870 | United States of America | Oregon | Sauvie Island | — | ||||
| Salix sessifolia Nutt. | T. J. Howell 474 | 1871 | United States of America | Oregon | — |
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| Rhytidiadelphus loreus (Hedw.) Warnst. | T. J. Howell | Jan 1876 | United States of America | Oregon | Multnomah Co. | — | ||||
| Glyceria borealis (Nash) Batch. | T. J. Howell 454 | May 1877 | United States of America | Oregon | Multnomah Co. | — |
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| Carex straminea Willd. ex Schkuhr | T. J. Howell 421 | May 1877 | United States of America | Oregon | Multnomah Co. | — |
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| Agrostis canina L. | T. J. Howell 495 | Jun 1877 | United States of America | Oregon | Multnomah Co. | — |
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| Agrostis exarata Trin. | T. J. Howell s.n. | Jun 1877 | United States of America | Oregon | Multnomah Co. | — |
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| Calamagrostis canadensis (Michx.) P.Beauv. | T. J. Howell 426 | Jun 1877 | United States of America | Oregon | Multnomah Co. | — |
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| Elymus canadensis L. | T. J. Howell 442 | Jul 1877 | United States of America | Oregon | Multnomah Co. Sand bar opposite… | — |
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| Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb. | T. J. Howell 430 | Jul 1877 | United States of America | Oregon | Multnomah Co. | — |
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| Eragrostis reptans (Michx.) Nees | T. J. Howell 431 | Jul 1877 | United States of America | Oregon | Multnomah Co. Cape Horn. | — |
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| Agrostis exarata Trin. | T. J. Howell s.n. | Jul 1877 | United States of America | Washington | Tualatin Plains. | — |
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| Agrostis perennans (Walter) Tuck. | T. J. Howell 3 | Jul 1877 | United States of America | Washington | Tualatine Plains. | — |
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| Agrostis stolonifera L. | T. J. Howell 465 | Jul 1877 | United States of America | Oregon | N[ultowaconah]. | — |
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| Paspalum distichum L. | T. J. Howell 3 | Jul 1877 | United States of America | Oregon | Multnomah Co. | — |
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| Agrostis stolonifera L. | T. J. Howell s.n. | 1877 | United States of America | Oregon | Multnomah Co. Oregon City. | — |
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| Polygonum kelloggii var. watsonii (S.Watson) Reveal | T. J. Howell s.n. | May 1878 | United States of America | — | Pacific Coast | — |
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| Hesperochiron californicus (Benth.) S.Watson | T. J. Howell s.n. | 1 Jun 1878 | United States of America | — | Klickitat Prairie | — |
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| Polystichum munitum var. munitum | T. J. Howell s.n. | Aug 1878 | United States of America | Oregon | Sauvies Island | — |
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| Astragalus hoodianus Howell | T. J. Howell 5388 | Jun 1879 | United States of America | Washington | Klikitat Prairie | — |
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| Woodsia scopulina D.C. Eaton | T. J. Howell s.n. | Jun 1879 | United States of America | Washington | Cimcoe Mts | — |
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| Eurybia radulina (A.Gray) G.L.Nesom | T. J. Howell s.n. | Aug. 1879 | United States of America | Oregon | Open woods, Western Oregon. | — |
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| Heterocladium macounii Best | T. J. Howell | 1879 | United States of America | Oregon | Near Portland | — | ||||
| Antitrichia californica Sull. | T. J. Howell 38 | 1879 | United States of America | Oregon | Near Portland | — | ||||
| Antitrichia curtipendula (Timm ex Hedw.) Brid. | T. J. Howell s.n. | 1879 | United States of America | Oregon | Near Portland | — | ||||
| Dendroalsia abietina (Hook.) E.Britton | T. J. Howell s.n. | 1879 | United States of America | Oregon | Portland | — | ||||
| Polypodium glycyrrhiza D.C. Eaton | T. J. Howell s.n. | Feb 1880 | United States of America | Oregon | On rocks and trees, Western… | — |
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| Polypodium glycyrrhiza D.C. Eaton | T. J. Howell s.n. | Feb 1880 | United States of America | Oregon | On rocks and trees, Western… | — |
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| Polypodium glycyrrhiza D.C. Eaton | T. J. Howell s.n. | Feb 1880 | United States of America | Oregon | On rocks and trees, Western… | — |
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| Anisothecium schreberianum (Hedw.) Dixon | T. J. Howell | Mar 1880 | United States of America | Oregon | Sauvies Island | — | ||||
| Pseudobraunia californica (Lesq.) Broth. | T. J. Howell | Mar 1880 | United States of America | Oregon | Near Cascades | — | ||||
| Eurhynchium pulchellum (Hedw.) Jenn. | T. J. Howell | Mar 1880 | United States of America | Oregon | Pacific Coast. Near Portland | — | ||||
| Dichelyma uncinatum Mitt. | T. J. Howell | Mar 1880 | United States of America | Oregon | Sauvie's Island | — | ||||
| Dichelyma uncinatum Mitt. | T. J. Howell | Mar 1880 | United States of America | Oregon | Sauvie's Island | — | ||||
| Orthotrichum lyellii Hook. & Taylor | T. J. Howell | 09 Mar 1880 | United States of America | Oregon | Columbia Co. | — | ||||
| Dichelyma uncinatum Mitt. | T. J. Howell | 26 Mar 1880 | United States of America | Oregon | — | |||||
| Peucedanum canbyi J.M.Coult. & Rose | T. J. Howell s.n. | Apr 1880 | United States of America | Oregon | Eastern Oregon | syntype |
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| Peucedanum canbyi J.M.Coult. & Rose | T. J. Howell s.n. | Apr 1880 | United States of America | Oregon | Eastern Oregon | possible syntype |
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| Capnorea hirtella Greene | T. J. Howell | Apr 1880 | United States of America | Washington | Eastern Washington Terr. | isotype |
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| Porotrichum bigelovii (Sull.) Kindb. | T. J. Howell | Apr 1880 | United States of America | Oregon | Multnomah Co. Near Portland | — | ||||
| Calliergonella cuspidata (Hedw.) Loeske | T. J. Howell | Apr 1880 | United States of America | Oregon | Pacific Coast. St. Helen | — | ||||
| Ranunculus reconditus A.Nelson & J.F.Macbr. | T. J. Howell s.n. | Apr 1880 | United States of America | Washington | Klickitat Co. | — |
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| Ranunculus reconditus A.Nelson & J.F.Macbr. | T. J. Howell s.n. | Apr 1880 | United States of America | Washington | Klickitat Co. | — |
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| Scleropodium colpophyllum (Sull.) Grout | T. J. Howell s.n. | Apr 1880 | United States of America | Oregon | Sauvie Island | — | ||||
| Racomitrium aciculare (Hedw.) Brid. | T. J. Howell s.n. | 1880 | United States of America | Oregon | Rooster Rock | — | ||||
| Poa arctica R.Br. | T. J. Howell 357 | Apr 1880 | — | — | — |
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| Antennaria dimorpha (Nutt.) Torr. & A.Gray | T. J. Howell s.n. | April 1880 | United States of America | Washington | Prairies, Eastern Washington Terr. | — |
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| Antennaria dimorpha (Nutt.) Torr. & A.Gray | T. J. Howell s.n. | April 1880 | United States of America | Washington | Prairies, Eastern Washington Terr. | — |
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| Antennaria dimorpha (Nutt.) Torr. & A.Gray | T. J. Howell s.n. | April 1880 | United States of America | Washington | Prairies, Eastern Washington Terr. | — |
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| Salix sitchensis Sanson ex Bong. | T. J. Howell s.n. | Apr 1880 - May 1880 | — | — | Columbia River bottoms | — |
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| Salix sitchensis Sanson ex Bong. | T. J. Howell s.n. | Apr 1880 - May 1880 | — | — | Columbia River bottoms | — |
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| Hesperochiron pumilus (Griseb.) Porter | T. J. Howell s.n. | 1 Apr 1880 | United States of America | Washington | Eastern Washington Terr. | — |
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| Synthyris missurica var. stellata (Pennell) Schaack | T. J. Howell s.n. | Apr 1880 - May 1880 | Unknown | — | Pacific Coast; along the Columbia… | — |
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| Fritillaria pudica (Pursh) Spreng. | T. J. Howell | Apr 1880 | United States of America | Washington | Prairies, Eastern Washington Terr. | — |
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| Ribes lobbii A.Gray | T. J. Howell s.n. | Apr 1880 | — | — | Pacific Coast | — |
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| Synthyris reniformis (Douglas ex Benth.) Benth. var. reniformis | T. J. Howell s.n. | Apr 1880 - May 1880 | — | — | Cascades [US or Canada] | — |
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| Adelinia grandis (Douglas ex Lehm.) J.I.Cohen | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast | — |
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| Plagiopus oederianus (Sw.) H.A.Crum & L.E.Anderson | T. J. Howell | Apr 1880 | United States of America | Oregon | Rooster Rock | — | ||||
| Anacolia menziesii (Turner) Paris var. menziesii | T. J. Howell | Apr 1880 | United States of America | Oregon | Multnomah Co. | — | ||||
| Bartramia pomiformis Hedw. var. pomiformis | T. J. Howell | Apr 1880 | United States of America | Oregon | Rooster Rock | — | ||||
| Cardamine nuttallii var. pulcherrima (Greene) R.L.Taylor & MacBryde | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast | — |
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| Cardamine nuttallii var. pulcherrima (Greene) R.L.Taylor & MacBryde | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast | — |
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| Triphysaria pusilla (Benth.) T.I.Chuang & Heckard | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast | — |
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| Triphysaria pusilla (Benth.) T.I.Chuang & Heckard | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast | — |
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| Triphysaria pusilla (Benth.) T.I.Chuang & Heckard | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast | — |
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| Microsteris gracilis (Hook.) Greene var. gracilis | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast | — |
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| Synthyris missurica var. stellata (Pennell) Schaack | T. J. Howell s.n. | Apr 1880 - May 1880 | United States of America | — | Pacific Coast. Along the Columbia… | — |
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| Montia linearis (Douglas ex Hook.) Greene | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast | — |
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| Montia linearis (Douglas ex Hook.) Greene | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast | — |
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| Crocidium multicaule Hook. | T. J. Howell s.n. | Apr 1880 | United States of America | — | Pacific Coast. | — |
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