Xanthisma blephariphyllum
Sida 20: 1403. 2003.
Subshrubs, (15–) 25–40 cm; taproots 1–6+ cm. Stems 5–15+, often much branched in distal 1/2, moderately stout to stout, not wiry, hispidulous, sometimes minutely stipitate-glandular. Leaves: basal withering by flowering; cauline evenly spaced, oblong to oblanceolate, 15–45 × 4–15 mm, gradually reduced distally, margins evenly, finely or obscurely serrate or serrulate, teeth 12–25 per side, each tipped with white bristle 0.5–2 mm, faces densely hairy, occasionally stipitate-glandular. Peduncles moderately to densely hispidulous or hispid; ebracteate. Involucres depressed-hemispheric, 4–8 × 8–15 mm. Phyllaries in 5–6 series, broadly linear or narrowly lanceolate, 2–7 mm, apices acuminate, often tipped by white seta or bristle, faces densely hairy, stipitate-glandular. Ray-florets 20–45; corollas white, tubes 2–3.5 mm, laminae 9–13.5 × 2–3.1 mm. Disc-florets 60–120+; corollas 4.6–6.3 mm. Cypselae oblong to obovoid, 2–2.8 mm, 10–18-ribbed, faces moderately whitish to tawny hairy; pappi tawny, 3–5.5 mm, a few abaxial bristles 1/3 length of longest. 2n = 8.
Phenology: Flowering spring–fall.
Habitat: Calcareous soils, rocky slopes or outcrops
Elevation: 1300–2600 m
Distribution
N.Mex., Tex.
Discussion
Xanthisma blephariphyllum is known from the White and Guadalupe Mountains of southern New Mexico, and the Sierra Diablo, Glass, and Davis mountains of west Texas.
Selected References
None.