1b. Chylismia brevipes subsp. pallidula (Munz) W. L. Wagner & Hoch, Syst. Bot. Monogr. 83: 206. 2007.
[E]
Oenothera brevipes A. Gray var. pallidula Munz, Amer. J. Bot. 15: 229. 1928; Camissonia brevipes (A. Gray) P. H. Raven subsp. pallidula (Munz) P. H. Raven; O. brevipes subsp. pallidula (Munz) P. H. Raven; O. pallidula (Munz) Munz
Herbs slender, usually branched distally, usually strigillose, sometimes also villous proximally. Flowers: buds not individually reflexed, without free tips or with apical free tips less than 1 mm; floral tube yellow inside, 4–5 mm; petals often with red dots near base, fading yellow to orange, 7–12 mm; anthers 4–6 mm. Capsules 20–42 mm; pedicel 2–10 mm. 2n = 14.
Flowering Mar–May. Dry flats, desert pavement, with Ambrosia dumosa and Larrea; 70–1100 m; Ariz., Calif., Nev., Utah.
Subspecies pallidula occurs in the Sonoran and Mojave deserts from Washington County, Utah, to southeastern Inyo County, California, south to Riverside County, California, Mohave County, Arizona, and Clark County, Nevada. It hybridizes with Chylismia claviformis subspp. aurantiaca and peeblesii, as well as with C. multijuga.
