1,100,502 specimens across 6 departments, collected since 1754 — 100,256 names, 42,336 type specimens.
2 specimens
Xylorhiza tortifolia
BISH 615950 · Cottam, W.P., 1958
Mohave County; Grand Canyon National Monument; Cove North Saddle Horse Spring
BISH 634325 · Herbst, D.R.; Woodley, L.; Gustafson, R., 1983
Black Mts., Salsberry Pass
