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Thomas Howell
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Oregon
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Family
Brassicaceae
(88)
Fabaceae
(86)
Asteraceae
(66)
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(46)
Poaceae
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Notes:
21.
Stanleya viridiflora Nutt. var. confertiflora Rob. in Gray
Stanleya
22.
Arabis koehleri Howell
23.
Arabis howellii S. Watson
24.
Astragalus drepanolobus A. Gray
25.
Astragalus diurnus S. Watson
26.
Limnanthes pumila Howell
Limnanthes
27.
Eriogonum pendulum S. Watson
Eriogonum
28.
Isoetes howellii Engelm.
Isoetes
immature plant June 1, mature plant August 1, 1880
29.
Arenaria howellii S. Watson
Arenaria
30.
Gilia gilioides (Benth.) Greene var. benthamiana Brand
31.
Antennaria howellii Greene
32.
Vancouveria chrysantha Greene
33.
Calandrinia columbiana Howell in A. Gray
Calandrinia
34.
Limnanthes floccosa Howell
Limnanthes
35.
Isoetes howellii Englemann
Isoetes
36.
Monardella purpurea Howell
37.
Astragalus umbraticus Sheldon
38.
Peucedanum watsonii Coult. & Rose
Peucedanum
39.
Orthocarpus cuspidatus Greene ssp. cuspidatus Greene
Orthocarpus
40.
Cotyledon oregonensis S. Watson
Cotyledon
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