Isocoma humilis

Herbage villosulous or tomentose to sparsely hispidulous (hairs short, crisped, white), not resinous. Leaf blades narrowly oblanceolate, 5-10(-18) mm, margins usually toothed or lobed (teeth or shallow lobes in 1-2(-3), pinnately arranged pairs), sometimes entire. Involucres 5-6 × 6-7 mm. Phyllary apices greenish, not aristate, gland-dotted, without resin pockets. Florets 19-28; corollas 4-5 mm. Cypsela ribs not forming apical horns.

Flowering Sep-Oct. Sandy soils from red sandstone, pinyon-juniper-shrub; of conservation concern; 1000-1200 m; Utah.

Isocoma humilis is known only from Washington County. It is recognized by its low stature (mostly 4-8 cm) and rounded habit, villosulous vestiture, small, toothed leaves, relatively large, many-flowered heads borne singly or in pairs, and small corollas and cypselae.