Yucca harrimaniae Trel.,Trelease, Ann. Rept. Missouri Bot.Gard. 13:59. 1902. the Spanish bayonet, is a species in the family Asparagaceae, native to Utah, Nevada, Colorado, northeastern Arizona and northern New Mexico, at elevations from 1000 m to 2700 m.Kew World Checklist of Selected Plant Species
Yucca harrimaniae is a small, acaulescent (stemless) species forming clumps of rosettes. Flowers are nodding (hanging downward), partly greenish-white, partly purplish.Plants for a Future, Yucca harrimaniae The species is closely related to Y. sterilis (Neese & S.L.Welsh) S.L.Welsh & L.C.Higgins..Flora of North America vol 26 page 436
The overall species is relatively common and widespread. Two varieties, var. nana and var. sterilis, have very small and restricted ranges.
References