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FNA | Family List | FNA Vol. 21 | Asteraceae | Brickellia

20. Brickellia knappiana Drew, Pittonia. 1: 260. 1888.

Shrubs, 100–200 cm. Stems (arching) branched from near bases, gland-dotted. Leaves alternate; petioles 4–5 mm; blades 3-nerved from bases, lance-ovate to lanceolate, 10–35 × 1–16 mm, bases acute to attenuate, margins dentate to serrate, apices acute to acuminate, faces densely gland-dotted and sparsely pubescent (not shiny). Heads in paniculiform arrays. Peduncles 2–5 mm, densely glandular-pubescent. Involucres cylindric to narrowly campanulate, 6–9 mm. Phyllaries 18–22 in 5–7 series, greenish, 3–4-striate, unequal, margins scarious (apices acute to acuminate); outer lance-ovate (sparsely puberulent, gland-dotted), inner lanceolate (glabrous). Florets 5–7; corollas white, 5–6.5 mm. Cypselae 2.5–3, puberulent to sparsely pubescent; pappi of 28–32 white, barbellulate bristles.

Flowering Sep–Oct. Gravelly washes; of conservation concern; 700–1700 m; Calif.

Brickellia knappiana is found only in the mountains of eastern California. It is noted as a possible hybrid between B. californica and B. multiflora. Collections from mixed populations of B. knappiana and B. californica have been noted on herbarium specimens.


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