Brickellia atractyloides var. atractyloides

Leaf blades deltate, lanceolate, or ovate, 3- or 4-nerved from bases, 10-50 × 5-25 mm, margins sharply dentate or entire, apices acuminate, faces glabrous or minutely glandular-puberulent. Involucres 10-15 mm. Phyllaries: outer 7-16-striate, broadly ovate, margins entire, inner narrowly lanceolate. Florets 40-90; corollas pale yellow-green. 2n = 18.

Flowering Mar-Sep. Rock crevices, cliff faces, talus slopes, outwash fans; 600-1600 m; Ariz., Calif., Colo., Nev., Utah.