Xanthisma spinulosum var. spinulosum
Synonyms: Haplopappus spinulosus subsp. cotula (Small) H. M. Hall Haplopappus texensis R. C. Jackson Machaeranthera texensis (R. C. Jackson) Shinners Sideranthus turbinellus Rydberg
Treatment appears in FNA Volume 20. Mentioned on page 391, 392.
Perennials, 10–40 cm, rarely woody at base. Stems spreading to sprawling, rarely stiffly erect, usually much branched in proximal 1/2–2/3; mid internodes 2–5 mm. Leaves numerous, equally spaced, mostly spreading to loosely ascending, not much reduced distally, margins pinnatifid or 2-pinnatifid, lobes linear to lanceolate, mostly 2–5 mm, faces usually hairy, rarely glabrous, usually stipitate-glandular. Heads 2–10+ in diffuse arrays. Peduncles relatively terminal and lateral, 0.5–2 cm. Involucres 8–12 mm wide. 2n = 8, 16.
Phenology: Flowering spring–fall.
Habitat: Rocky to sandy plains and rolling hills, washes, roadsides
Elevation: 300–1300 m
Distribution
Alta., Man., Sask., Ariz., Colo., Idaho, Iowa, Kans., Minn., Mont., Nebr., N.Mex., N.Dak., Okla., Utah, Wyo., Mexico (Coahuila, Nuevo León, San Luis Potosí, Tamaulipas, Zacatecas).
Discussion
Selected References
None.
Lower Taxa
None.