Hazardia whitneyi

(A. Gray) Greene

Pittonia 3: 43. 1896.

Common names: Whitney’s bristleweed
Basionym: Haplopappus whitneyi A. Gray Proc. Amer. Acad. Arts 7: 353. 1868 (as Aplopappus)
Treatment appears in FNA Volume 20. Treatment on page 447. Mentioned on page 446.

Perennials (from woody rootstocks) or subshrubs, 20–50 cm. Stems scabrid to sparsely tomentulose, distally stipitate-glandular. Leaves sessile; blades widely oblong to oblanceolate, 25–50 × 7–16 mm, subcoriaceous, bases subclasping (distal), margins serrate, apices acute, faces glabrous, sparsely puberulent, or glandular-scabrid. Heads borne singly or in spiciform, racemiform, or cymiform arrays. Involucres campanulate, 11–13 × 8–12 mm. Phyllaries sometimes recurved, linear-lanceolate, apices acute, herbaceous and stipitate-glandular. Ray florets 0 or 5–18, sterile; corollas longer than involucres, conspicuous. Disc florets 15–30; corollas 8–10 mm. Cypselae 5–10 mm, glabrous.


Varieties 2 (2 in the flora).

Selected References