Bull. Torrey Bot. Club 23: 194. 1896. (as Chylisma)
Herbs annual, moderately to densely villous, sometimes strigillose. Stems branched, 3–75 cm. Leaves primarily in basal rosette, cauline greatly reduced when present, 6–14 × 1.5–3.5 cm; petiole 1.5–4(–11) cm; blade pinnately lobed or lateral lobes greatly reduced or absent, often mixed on same plant, terminal lobe usually ovate, rarely elliptic, 2.5–6.9 × 1.5–7 cm, margins irregularly dentate, oil cells on abaxial surface inconspicuous. Racemes nodding, mostly elongating after flowers. Flowers opening at sunrise; buds sometimes individually reflexed, without free tips or with subapical free tips 1–2 mm, or with minute, apical free tips less than 1 mm; floral tube 3–8 mm, densely short-villous inside proximally; sepals 5–9 mm; petals bright yellow, sometimes with red dots at base, fading yellow to orange or reddish, 3–18 mm; stamens subequal, filaments 3–6 mm, anthers 2.5–6 mm, ciliate; style 10–18 mm, stigma exserted beyond anthers at anthesis. Capsules ascending or spreading, oblong-cylindrical, 18–92 mm; pedicel 2–20 mm. Seeds 1–1.5 mm.
sw United States.
Subspecies 3 (3 in the flora).
P. H. Raven (1962, 1969) determined this species to be self-incompatible.
|1||Flower buds individually reflexed; petals often fading reddish, 3–8 mm.||Chylismia brevipes subsp. arizonica|
|1||Flower buds not individually reflexed; petals fading yellow to orange, 6–18 mm.||> 2|
|2||Plants stout, villous; buds with subapical free tips 1–2 mm; petals usually without red dots at base.||Chylismia brevipes subsp. brevipes|
|2||Plants slender, usually strigillose, sometimes also villous proximally; buds with apical free tips 0–1 mm; petals often with red dots near base.||Chylismia brevipes subsp. pallidula|