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FNA | Family List | FNA Vol. 20 | Asteraceae | Grindelia

9. Grindelia oölepis S. F. Blake, Proc. Biol. Soc. Wash. 41: 139. 1928.

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).


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