Harvard University Herbaria & Libraries

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FH: 00512037 Alectoria sp. USA: Oregon [data not captured] J. Howell
FH: 00474759 Pseudocyphellaria anomala I. M. Brodo & T. T. Ahti USA: Oregon [no additional data] J. Howell
Apiaceae
GH: 00077329 Lomatium cous (S. Watson) J. M. Coulter & Rose USA: Oregon Stoney hillsides, John Day's Valley J. Howell 270 1880-5
GH: 00077329 Peucedanum cous S. Watson USA: Oregon Stoney hillsides, John Day's Valley J. Howell 270 1880-5
Asteraceae
GH: 02141458 Agoseris grandiflora (Nuttall) Greene USA: Oregon [data not captured] J. Howell 175 1884-6
GH: 00263129 Aster foliaceus apricus A. Gray USA: Washington Mt. Adams, Middle Elevation J. Howell 1882
GH: 00263129 Aster frondeus (A. Gray) Greene USA: Washington Mt. Adams, Middle Elevation J. Howell 1882
A: 02216689 Chrysothamnus viscidiflorus lanceolatus (Nuttall) H. M. Hall & Clements USA: Washington [data not captured] J. Howell 1877-10
GH: 02142689 Crepis monticola Coville USA: Oregon [data not captured] J. Howell 173 1884-5
GH: 02142788 Crepis occidentalis pumila (Rydberg) E. B. Babcock & G. L. Stebbins USA: Oregon [data not captured] J. Howell 172 1884-5
GH: 02353733 Erigeron linearis (Hooker) Piper USA: Oregon [data not captured] J. Howell 1875
GH: 00936444 Packera bolanderi harfordii (Greenman) Trock & T. M. Barkley USA: Oregon Rooster Rock, Oregon J. Howell 1877-6
Athyriaceae
GH: 00022324 Cystopteris fragilis laciniata Davenport USA: Oregon J. Howell 1876
Bartramiaceae
FH: 00536199 Anacolia menziesii (Taylor) Paris USA: Oregon [no additional data] J. Howell 1880-5-8
Boraginaceae
GH: 00093854 Amsinckia menziesii microcarya Brand USA: Oregon Western Oregon J. Howell 1881-5
Brassicaceae
GH: 00948512 Boechera sparsiflora (Nuttall) Dorn USA: Washington [data not captured] J. Howell 1879-6
GH: 01540811 Idahoa scapigera (Hooker) A. Nelson & J. F. Macbride USA: Washington [data not captured] J. Howell 1878-3
GH: 00019486 Nasturtium sinuatum pubescens S. Watson USA: Oregon Sauvie's Island J. Howell 1884-6-1
GH: 00019486 Rorippa columbiae Suksdorf ex Howell USA: Oregon Sauvie's Island J. Howell 1884-6-1
Campanulaceae
GH: 00033230 Howellia aquatilis A. Gray USA: Oregon Sauvier's Island J. Howell 137 1879-5
Ceratophyllaceae
GH: 02073369 Ceratophyllum demersum Linnaeus USA: Oregon [data not captured] J. Howell
Droseraceae
GH: 01143471 Drosera anglica Hudson USA: Oregon Arthur. J. Howell 1883
Ericaceae
GH: 01117476 Arctostaphylos nevadensis A. Gray USA: Oregon Mount Hood J. Howell 104 1878
GH: 01117477 Arctostaphylos nevadensis A. Gray USA: Oregon Siskiyou Mts. J. Howell 186 1884
GH: 01591107 Empetrum nigrum Linnaeus USA: Oregon Bandon J. Howell 732 1891-4-20
A: 01592209 Gaultheria shallon Pursh USA: Oregon [no additional data] J. Howell 1876-7
Fabaceae
GH: 00058696 Astragalus conjunctus S. Watson USA: Oregon John Day R. Valley J. Howell 263 1880-5
GH: 00066135 Astragalus curvicarpus subglaber (Rydberg) Barneby USA: Oregon John Day River J. Howell 2[6]1 1880-5
GH: 00058696 Astragalus howelli A. Gray USA: Oregon John Day R. Valley J. Howell 263 1880-5
GH: 00058770 Astragalus howelli A. Gray USA: Oregon J. Howell 180 p.p. 1882-5-2
GH: 00058771 Astragalus howelli A. Gray USA: Oregon J. Howell 180 p.p. 1879
GH: 00058907 Astragalus reventus A. Gray USA: Washington Klickitat Valley J. Howell 1878
GH: 00058907 Cnemidophacos reventiformis Rydberg USA: Washington Klickitat Valley J. Howell 1878
GH: 00066135 Homalobus subglaber Rydberg USA: Oregon John Day River J. Howell 2[6]1 1880-5
AMES: 02050785 Listera caurina Piper USA: Oregon Near Mt. Hood J. Howell 1878
AMES: 02050792 Listera caurina Piper USA: Oregon Near Mt. Hood J. Howell 1878-6
GH: 02176969 Lupinus leucophyllus canescens (Howell) C. P. Smith USA: Washington [data not captured] J. Howell 1879-6
GH: 02128864 Lupinus sulphureus Douglas USA: Oregon [data not captured] J. Howell 1884-5-10
Gentianaceae
GH: 00415257 Centaurium exaltatum (Grisebach) Wight USA: Washington St. Helens J. Howell 165 1876-7
GH: 00415257 Erythraea muehlenbergii Grisebach USA: Washington St. Helens J. Howell 165 1876-7
Hippuridaceae
GH: 02000415 Hippuris vulgaris Linnaeus USA: Oregon [data not captured] J. Howell 1877
Liliaceae
GH: 00026442 Tofieldia occidentalis S. Watson USA: Oregon Cascade Mountains J. Howell 1878
Onagraceae
GH: 00359564 Oenothera coquimbensis Gay USA: Oregon Portland: J. Howell 1877-9
GH: 00359564 Oenothera sinuata Linnaeus USA: Oregon Portland: J. Howell 1877-9
Orchidaceae
AMES: 02051591 Cephalanthera austiniae Bentham & Hooker f. USA: Oregon Portland: [no additional data] J. Howell 1878-6
GH: 01938456 Corallorhiza mertensiana Bongard USA: Oregon Cascade Mts. J. Howell 1878-06
GH: 00139184 Corallorhiza striata Lindley USA: Oregon Sauvie Island J. Howell 1879-5
AMES: 00098680 Cypripedium occidentale S. Watson USA: Oregon J. Howell 1877-6
AMES: 02063962 Platanthera elegans Lindley USA: Oregon [no additional data] J. Howell 1877-7
Orobanchaceae
GH: 00056156 Castilleja levisecta Greenman USA: Washington "Mill Plain, NW Terr.", [Location is Near Va... J. Howell 279 1880
Plantaginaceae
GH: 00466897 Callitriche marginata Torrey USA: Oregon [data not captured] J. Howell 1884
GH: 01998399 Collinsia grandiflora Douglas USA: Oregon [data not captured] J. Howell 1879-6
GH: 01998828 Collinsia parviflora Lindley USA: Oregon [data not captured] J. Howell 1879-4
GH: 00078160 Collinsia rattanii A. Gray USA: Washington Simcoe Mountains, pine woods J. Howell 1879
GH: 02118966 Penstemon deustus variabilis (Suksdorf) Cronquist USA: Washington [data not captured] J. Howell 1879
GH: 02119837 Penstemon glandulosus Douglas ex Lindley USA: Washington [data not captured] J. Howell 1870-6
GH: 01804557 Synthyris missurica stellata (Pennell) Kartesz & Gandhi USA: Oregon [data not captured] J. Howell 1879-6
GH: 01804655 Tonella collinsioides Nuttall ex A. Gray USA: Oregon [data not captured] J. Howell 1879-6
GH: 01805156 Veronica americana Schweinitz ex Bentham USA: Oregon [data not captured] J. Howell 238 1884-6
Polygonaceae
GH: 02007867 Polygonum spergulariiforme Meisner ex Small USA: Oregon [data not captured] J. Howell 175
Portulacaceae
GH: 00353735 Calyptridium umbellatum (Torrey) Greene USA: Oregon Mt. Hood J. Howell 1878-6
GH: 00353735 Spraguea umbellata Torrey USA: Oregon Mt. Hood J. Howell 1878-6
GH: 00353735 Spraguea umbellata caudifera A. Gray USA: Oregon Mt. Hood J. Howell 1878-6
Pterobryaceae
FH: 00847191 Neckeradelphus menziesii (Drummond) Steere USA: Oregon [data not captured] J. Howell 1880-3
Pucciniaceae
FH: 00873040 Cumminsiella sanguinea (Peck) Arthur USA: Oregon [no additional data] J. Howell 25
Ranunculaceae
GH: 00038451 Ranunculus glaberrimus reconditus (A. Nelson & J. F. Macbride) L. D. Benson USA: Washington J. Howell 1878-2
GH: 00038451 Ranunculus hookeri Schlechtendal USA: Washington J. Howell 1878-2
GH: 00038451 Ranunculus triternatus A. Gray USA: Washington J. Howell 1878-2
Rosaceae
GH: 00346419 Prunus emarginata (Douglas ex Hooker) Eaton USA: California Siskiyou Mts. J. Howell 1887
GH: 00040253 Rubus lasiococcus A. Gray USA: Oregon Near Mount Hood J. Howell 1878
Rubiaceae
GH: 00092725 Galium arcuatum Wiegand USA: California J. Howell 137 1884-7
Saxifragaceae
GH: 00042628 Bolandra oregana S. Watson USA: Oregon Milwaukee J. Howell 22 1877-6
GH: 00348410 Ribes lobbii A. Gray USA: Oregon Willamette Slough [Multnomah Channel] J. Howell 1875
GH: 00589779 Saxifraga leucanthemifolia brunoniana (Bongard) Engler USA: Oregon banks of Willamette R. J. Howell 1877-6
GH: 00589779 Saxifraga occidentalis S. Watson USA: Oregon banks of Willamette R. J. Howell 1877-6
GH: 00043158 Sullivantia oregana S. Watson USA: Oregon Milwaukee J. Howell 1877
Solanaceae
GH: 00244941 Solanum umbelliferum Eschscholtz USA: Oregon J. Howell 1884-5
GH: 00244941 Solanum xanti glabrescens Parish USA: Oregon J. Howell 1884-5
Usneaceae
FH: 00476828 Ramalina farinacea (Linnaeus) Acharius USA: Oregon [no additional data] J. Howell
Valerianaceae
GH: 00032854 Valerianella anomala A. Gray USA: Oregon Sauvier Island J. Howell 216 1879-4
Violaceae
GH: 00112469 Viola beckwithii trinervata Howell USA: Washington J. Howell 1878-4
GH: 00112469 Viola trinervata (Howell) Howell ex A. Gray USA: Washington J. Howell 1878-4