Mt. Davis Brickellbush

Perennials, 12–30 cm (caudices woody). Stems branched, pubescent. Leaves opposite; petioles 0–1 mm; blades 3-nerved from bases, deltate-ovate to lanceolate, 7–30 × 4–28 mm, bases mostly obtuse to sub-truncate, sometimes acuminate, margins serrate, apices acute, faces puberulent, gland-dotted. Heads borne singly or in corymbiform-paniculiform arrays. Peduncles 10–30 mm, puberulent. Involucres cylindric to campanulate, 8–12 mm. Phyllaries 12–15 in 3–5 series, greenish, often purple-tinged, 5–7-striate, unequal, margins scarious (apices acute); outer ovate to lance-ovate (puberulent, margins ciliate), inner narrowly lanceolate (glabrous). Florets 8–14; corollas pale green or yellow, 5.5–6.5 mm. Cypselae 4.5–5 mm, densely pubescent; pappi of 24–30 white, usually barbellate, sometimes subplumose, bristles. 2n = 18.

Brickellia parvula, the Mt. Davis brickellbush, is a North American species of flowering plants in the family Asteraceae. It is native to northeastern and north-central Mexico (Chihuahua) and the southwestern United States (southern New Mexico, southern Arizona, western Texas).

Brickellia parvula is a shrub up to 30 cm (12 inches) tall, growing from a woody caudex. It produces many small flower heads with yellow or green disc florets but no ray florets.

Brickellia parvula là một loài thực vật có hoa trong họ Cúc. Loài này được A.Gray mô tả khoa học đầu tiên năm 1852.