Grindelia oolepis

Perennials, 15-35(-55) cm. Stems decumbent to ascending (from rhizomes), dull green, mostly glabrous, sometimes distally puberulous. Cauline leaf blades lanceolate-oblong or lanceolate to oblanceolate or linear, 10-60 mm (smaller distally), lengths 5-10 times widths, bases ± clasping, margins denticulate (teeth apiculate) or entire, apices acute, faces glabrous or puberulous to scabridulous, little, if at all, gland-dotted. Heads borne singly. Involucres hemispheric to campanulate, 6-9 × 8-14 mm. Phyllaries in 4-5+ series, slightly spreading to appressed, lanceolate to oblong or ovate, apices slightly recurved or ± straight, rounded to acute, slightly, if at all, resinous. Ray florets 0. Cypselae stramineous or yellow-brown, 2-3 mm, apices smooth or ± coronate, faces smooth or ± rugose; pappi of 1-2, ± straight, smooth, setiform awns or subulate scales 4-4.5 mm, shorter than disc corollas. 2n = 12.

Flowering (May-)Sep-Dec. Black, 'gumbo' clay soils; 0-20 m; Tex.

Grindelia oölepis is expected in Mexico (Nuevo León, Tamaulipas).