Herbs usually much-branched from base, glandular-pubescent but often glabrate. Leaves: larger ones 3 times pinnatifid, ultimate lobes narrow, rounded, and often elongate. Seeds 3.1–3.6 mm.
Phenology: Flowering Jun–Nov.
Habitat: Open desert, semidesert, calcareous or gypsum hills, bajadas, flats.
Elevation: (70–)600–1300 m.
Distribution
Tex., Mexico (Coahuila, Durango, Nuevo León).
Discussion
Variety tenuipes is found in Brewster, Crockett, Maverick, and Terrell counties.
Selected References
None.
Lower Taxa
None.