Synonym
provided by eFloras
Dyssodia setifolia (Lagasca) B. L. Robinson
- license
- cc-by-nc-sa-3.0
- copyright
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Comprehensive Description
provided by North American Flora
Thymophylla setifolia Lag. Gen. & Sp. Nov. 25. 1816
Hymenalherum setifolium A. Gray, Proc. Am. Acad. 19: 42. 1883. Hymenalherum setifolium radiatum Brand. Univ. Calif. Publ. Bot. 4: 279. 1912. Dyssodia setifolia B. L. Robinson, Proc. Am. Acad. 49: 508. 1913.
A cespitose perennial, suffruticose below; stems 1-2 dm. high, densely white-tomentose, much branched; leaves mostly opposite, crowded, with smaller ones fascicled in their axils, tomentose, 1-3 cm. long, pinnatifid into 3-7 filiform, spinulose-tipped segments; peduncles 4-6 cm. long; involucre tomentose, turbinate, 4 mm. high, 5-6 mm. broad; bracts united very high up, with lanceolate, acuminate tips, bearing 1-3 glands; ray-flowers usually wanting, rarely present; ligules 3 mm. long, 1 mm. wide; disk-corollas 2 mm. long; tube shorter than the narrowly funnelform throat; achenes 2.5 mm. long, glabrous; pappus of 5-10 squamellae, either all oblong, about 0.5 mm. long, muticous and erose, or the inner lanceolate, awntipped and nearly 2 mm. long.
Type locality: "Nova Hispania" [Mexico]. Distribution: Coahuila to Queretaro and Aguas Calientes.
- bibliographic citation
- Per Axel Rydberg. 1915. (CARDUALES); CARDUACEAE; HELENIEAE, TAGETEAE. North American flora. vol 34(2). New York Botanical Garden, New York, NY
