PLANTS: Shrubs or suffrutescent perennials, to 1 m tall; hairs include barbed, stinging and dendritic forms.

LEAVES: short-petiolate, 2-7.5 cm long, elliptic; lower surface densely covered with dendritic trichomes; margins sinuate-toothed to pinnately lobed; upper leaves subsessile, lanceolate.

INFLORESCENCE: strongly congested cymes, 1-4 cm in diameter, appearing white from dense covering of trichomes, these 1-1.5 mm long; peduncles braetless, 2-10 cm long.

FLOWERS: ca. 1 cm long at anthesis; subtending bract linear; calyx persistent, the lobes linear, appearing plumose with long trichomes; petals distinct, linear, also plumose, persistent, yellowish; stamens 5, shorter than the petals, opposite the sepals, persistent, distinct and free; connective prolonged much past the anthers, inflated, yellow; pistil 3-carpellate, the style short, the stigma conical, level with lower portions of the anthers.

ACHENES: ca. 1.5(-2) cm long including the persistent floral parts, the seed-containing portion 3-4 mm long.

SEED: 1, subapical; testa non-sculptured; endosperm lacking. X = 7.

NOTES: A monotypic genus.

REFERENCES: Christy, Charlotte M. 1998. Loasaceae. J. Ariz. - Nev. Acad. Sci. 30(2): 96.