Deinandra corymbosa (DC.) B. G. Baldwin

Deinandra corymbosa occurs on the Central Coast and the Northern Coast and in the Outer South Coast Ranges and San Francisco Bay area. Plants with relatively large heads in glomerules from the Central Coast south of Big Sur have been treated as subsp. macrocephala; no subspecies are recognized here because of wide variation in head size and arrangement along the Central Coast north and south of Big Sur.

Annuals, 6–100 cm. Stems ± solid. Leaves: proximal blades pinnatifid, faces ± hirsute to villous and sometimes stipitate-glandular. Heads in corymbiform, racemiform, or paniculiform arrays or in glomerules. Bracts sub-tending heads often overlapping proximal 0–¹/2+ of each involucre. Phyllaries evenly stipitate-glandular, including margins and apices, with non-glandular, non-pustule-based hairs as well. Paleae in 1 series. Ray florets 15–35; laminae deep yellow, 4–8 mm. Disc florets 24–70, all functionally staminate; anthers reddish to dark purple. Pappi 0, or coroniform (irregular crowns of entire, erose, or laciniate scales 0.1–0.9) mm. 2n = 20.

Hartmannia corymbosa de Candolle in A. P. de Candolle and A. L. L. P. de Candolle, Prodr. 5: 694. 1836; Deinandra corymbosa subsp. macrocephala (Nuttall) B. G. Baldwin; Hemizonia corymbosa (de Candolle) Torrey & A. Gray; H. corymbosa subsp. macrocephala (Nuttall) D. D. Keck

Deinandra corymbosa is a rare North American species of plants in the tribe Madieae within the family Asteraceae. A common name is coastal tarweed.

Deinandra corymbosa is native to California, found in the Coast Ranges from Humboldt County to Santa Barbara County. Isolated populations have been reported farther inland in Shasta and Kern Counties, the latter in an urban area within the City of Mariposa.

Deinandra corymbosa is an annual herb up to 100 cm (40 inches) tall. It produces many yellow flower heads, each with both disc florets and ray florets.

Deinandra corymbosa là một loài thực vật có hoa trong họ Cúc. Loài này được (DC.) B.G.Baldwin mô tả khoa học đầu tiên năm 1999.