Abronia bolackii N.D.Atwood, S.L.Welsh & K.D.Heil
Family: Nyctaginaceae
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Plants perennial, short caulescent or nearly acaulescent. Stems decumbent to erect, minutely and sparsely glandular-pubescent or ± glabrate, arising from cordlike rhizomes. Leaves: petiole 1-4 cm; blade elliptic-oblong to ovate, 1-4 × 0.5-2 cm, margins entire to shallowly sinuate, often ± undulate, surfaces minutely puberulent or glabrous (especially in age). Inflorescences: peduncle longer than subtending petiole; bracts broadly lanceolate, ovate, obovate, or almost round, 5-10 × 3-10 mm, scarious, apex acute, obutse, or rounded, glandular-puberulent; flowers 15-25. Perianth: tube greenish, 7-11 mm, limb white, 3 mm diam. Fruits broadly turbinate, 5-7 × 3-5 mm, scarious, apex truncate and slightly beaked; wings (3-)5, dilated distally and ± flattened perpendicular to plane of lamina, dilations ± as long as wide, thin walled, cavities extending throughout. Flowering spring-summer. Gypseous sandy or gravelly soils, open areas, among sparse shrubs; 1700 m; N.Mex. As far as is known, Abronia bolackii is restricted to gypseous lenses of the Ojo Alamo Formation in San Juan County, New Mexico.

The National Science Foundation
This project made possible by National Science Foundation Award 1410069