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1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
Pilularia americana
BISH 403707
Thorne, R.F.; Lathrop, E., 1969
Riverside County. Santa Rosa Plateau. On south end of Mesa de Colorado, Rancho California.
Plagiobothrys undulatus
BISH 403731 · Thorne, R.F.; Lathrop, E., 1969
Riverside County, Santa Rosa Plateau: Mesa de Colorado, Rancho California. N of large vernal marsh