Synonyms:
Yucca harrimaniae var. sterilis Neese & Welsh, Great Basin Naturalist 45 (4):  789-790 (1985)

Type location:
USA Utah. Uintah Co., T6S, R22E, Sec 14, ca 8 km S of Jensen, at Mouth of Walker Hollow, at 1.470 m elevation, Salt desert shrub community, on bluff margin, alluvium over Uintah Formation.

Distribution:
Uintah Basin area, Duchesne Co., and Uintah Co., Utah, in Sandy soil,, at 1300-1700 m elevation.

Short description of the species:
Plants Acaulescent, only spreading via rhizomes. Leaves blue-green, downward curving, 10 to 30 cm long, up to 2 cm wide, with white margin, and only few fibers. Inflorescence up to 40 cm high. Flowers large, bell-shaped, 3 to 5 cm long, white, sometimes the outer tepals are slightly violet. Style short 0,6 to 1 cm long, swollen. Fruit sterile, does not produce fruit! Flowering time May to June in nature.

Hardiness:
I haven't had any experience with this species yet, but I have grown some of the species that it grows with in habitat: Sclerocactus wetlandicus, Sclerocactus wetlandicus ssp. ilsae, Pediocactus simpsonii. those species can be grown in an unheated greenhouse here in Denmark, and I would think that Yucca harrimaniae ssp. sterilis would be OK here too.

Pictures:
I do not have any pictures of this species, if you have a photo that I may use please let me know

Notes:
Yucca harrimaniae ssp. sterilis does apparently only reproduces by rhizomes, and not by seeds.!

Related species:
Yucca harrimaniae
Yucca harrimaniae ssp. gilbertiana
Yucca harrimaniae ssp. neomexicana
Yucca nana

Reference:
NEESE & WELSH, Great Basin Naturalist, Brigham Young University, Provo, Utah, 45 (4), 789-790, 1986, USA.
HOCHSTAETTER, Cactaceae-Review IRT 1 (2): 21 (1998) (Yucca harrimaniae ssp. sterilis)
HOCHSTAETTER, F; (2000), YUCCA (vol. I): 35 (Yucca harrimaniae ssp. sterilis)