Hairyseed Bahia

Bahia dealbata A. Gray, Mem. Am. Acad. II. 4: 99. 1849
Bahia absinlhifolia dealbata A. Gray. PI. Wright. 1: 121. 1852.
Picradeniopsis dealbata Wooton & Standley, Contr. U. S. Nat. Herb. 16: 192. 1913.
A perennial with a woody base; stem branched, about 3 dm. high, white-tomentose;
leaves opposite, subsessile or short-petioled, white-tomentose, 1-5 cm. long, 3-cleft with
lanceolate or linear, entire or toothed segments, or the lower leaves lanceolate and entire;
peduncles at the ends of the branches, 2-6 cm. long; involucre hemispheric, 7 mm. high,
12-13 mm. broad; bracts 12-15, tomenfose, broadly oblanceolate, acuminate; ligules linear,
yellow, 18-20 mm. long; disk-corollas yellow; tube 2 mm. long, glandular; throat about 1
mm. long, campanulate; achenes about 5 mm. long, narrowly obpyramidal, strongly 4-angled,
villous and distinctly striate on the faces; squamellae of the pappus 1.5 mm. long, obovate,
truncate, with the dorsal thickening lanceolate and two-thirds their length.
Type locality: Valley between Mapimi and Giiajuquilla, Chihuahua. Distribution: Western Texas to Arizona and Chihuahua.

Bahia absinthifolia Benth. PI. Hartw. 18. 1839
A perennial, sufTruticose at the base; stem 2-4 dm. high, finely whitetomentose, branched; leaves opposite, subsessile, white-tomentose, 2-5 cm. long, pinnately dissected into 3-5 narrowly linear, entire or again dissected segments; heads at the end of the branches; peduncles 2-5 cm. long; involucre hemispheric, 6-7 mm. high, 10-12 mm. broad; bracts usually rather narrowly oblanceolate, acuminate, white-tomcntosc; ligules yellow, linear, 7-8 mm. long; tube of disk-corollas nearly 2 mm. long, glandular; throat campanulate, fully 1 mm. long; achenes narrowly obpyramidal, 5 mm. long, 4-angled, villous and striate; squamellae of the pappus 1.5 mm. long, obovate, truncate, the dorsal thickening lanceolate, extending about two-thirds their length.
Type locality: Aguascalientes, Mexico.
Distribution: Arizona and Texas to Aguascalientes and Durango.

Bahia absinthifolia, the hairyseed bahia or desert bahia, is a North American species of flowering plants in the family Asteraceae. It is native to northern Mexico (Tamaulipas, Nuevo León, Coahuila, Chihuahua, San Luis Potosí, Querétaro, Hidalgo, Durango, Aguascalientes) and the south-western United States (Arizona New Mexico Texas; populations reported from Utah appear to be introductions).

Bahia absinthifolia is a perennial up to 40 cm (16 inches) tall. It has yellow flowers with both ray florets and disc florets. It grows in sandy soil in desert regions.