Xylorhiza tortifolia var. imberbis (Cronq.) T.J. Wats.
Asteraceae
M. Lane (Dec. 1993)
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Elizabeth McClintock
52-332
1952-05-01
May 1,1952
United States, Arizona, Mohave County, Grand Canyon National Monument; south of Toroweap Point, along trail into side canyon ca. half way between Devil's Bathtub and Burro Canyon; Grand Canyon National Park