Contr. U.S. Natl. Herb. 4: 134, plate 10. 1893.

Common names: California mountain-pincushion
Etymology: Greek horos, mountain, and generic name Chaenactis
Treatment appears in FNA Volume 21. Treatment on page 414. Mentioned on page 182, 364, 366, 401.

Annuals, 1–25 cm. Stems erect to spreading, simple or ± branched (very slender). Leaves cauline; opposite (proximal) or alternate; obscurely petiolate or sessile; blades linear to narrowly oblong-oblanceolate, margins entire, faces tomentose to glabrate, gland-dotted. Heads discoid, borne singly or (2–5) in clusters (at stem tips). Involucres cylindric or narrowly turbinate, 3–4(–6) mm diam. Phyllaries persistent, 4–7 in ± 1 series (distinct, oblong, unequal, glandular-puberulent). Receptacles ± flat, ± knobby, epaleate. Ray florets 0. Disc florets 4–9; corollas yellow, lobes 5, short-triangular (anther bases short-sagittate, appendages short-triangular; style branches linear, tapering). Cypselae terete, linear-clavate, narrowly ribbed, minutely glandular-puberulent, glabrescent; pappi falling (in rings), of 11–17 (basally connate) oblanceolate, fringed, obtuse scales. x = 9.


Species 1.

Selected References


... more about "Orochaenactis"
David J. Keil +
Coville +
California mountain-pincushion +
Greek horos, mountain, and generic name Chaenactis +
Contr. U.S. Natl. Herb. +
Undefined (tribe Undefined) subtribe Bahiinae +  and Undefined (tribe Undefined) subtribe Palafoxiinae +
Orochaenactis +
Asteraceae (tribe Heliantheae) subtribe Chaenactidinae +