Centromadia rudis Greene, Man. Bot. San Francisco, 197. 1894; Hemizonia parryi Greene subsp. rudis (Greene) D. D. Keck

Leaves (and peduncular bracts) scabroso-hirtellous and usually ± hirsute or setose-ciliate, not glandular or with sparsely and irregularly distributed, minute, sessile or stipitate, yellowish glands. Involucres 3.5–5 mm. Paleae lacking purple lines. Ray corolla laminae 2–3 mm. Anthers yellow or brownish. 2n = 22.

Flowering Jun–Oct. Grasslands, edges of marshes and vernal pools, disturbed sites (e.g., fallow fields); 0–500 m; Calif.

Subspecies rudis occurs in the southern Sacramento Valley, northern San Joaquin Valley, and, uncommonly, in the southern Inner North Coast Ranges.