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1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
Lepidium perfoliatum
BISH 615008
Cottam, W.P., 1957
Grand Canyon National Monument; Toroweap Flats
Epilobium brachycarpum
BISH 1001725 · Cottam, W.P., 1957
On north facing slopes; quarter mile above Mountain Dell Reservior; Parley Canyon; Salt Lake County
Carex
BISH 1002079 · Cottam, W.P., 1958
CocheCounty; Logan Canyon
Muhlenbergia pungens
BISH 614997 · Cottam, W.P., 1956
Kane County; west sand dunes near Government Well
Layia glandulosa
BISH 615005 · Cottam, W.P., 1958
Mohave County; Grand Canyon National Monument; Covington's Mine Camp
Oenothera albicaulis
BISH 615195 · Cottam, W.P., 1950
Grand Co.; 3 miles west of Dead Horse Point
Tradescantia occidentalis
BISH 615881 · Cottam, W.P., 1957
Garfield County; 3 miles southwest of Boulder; on Boulder-Escalante Highway
Xylorhiza tortifolia
BISH 615950 · Cottam, W.P., 1958
Mohave County; Grand Canyon National Monument; Cove North Saddle Horse Spring
Lappula redowskii
BISH 624260 · Cottam, W.P., 1953
Pilot Mountains; Elko County