Difference between revisions of "Chylismia claviformis subsp. yumae"
Syst. Bot. Monogr. 83: 207. 2007.
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Revision as of 17:00, 27 April 2022
Herbs strigillose, often densely so, sometimes also glandular puberulent distally. Stems 5–40 cm. Leaves: blade lateral lobes poorly or well developed, terminal lobe lanceolate, to 6.5 × 2 cm, margins irregularly sinuate-dentate. Flowers opening at sunset; buds usually without free tips, sometimes with apical free tips less than 1 mm; floral tube orange-brown inside, 2.5–4 mm; petals pale yellow, fading reddish or not changing color, 3–5 mm. 2n = 14.
Phenology: Flowering Feb–May.
Habitat: Very arid dunes and sandy flats, with Ambrosia dumosa and Larrea tridentata.
Elevation: 0–300 m.
Distribution
Ariz., Calif., Mexico (Baja California, Sonora).
Discussion
Subspecies yumae is known from southeastern Imperial County, California, Yuma Desert, Arizona, and from El Gran Desierto to Puerto Peñasco in northwestern Sonora, and in northeastern Baja California. The subspecies is probably from hybridization between subspp. aurantiaca and peirsonii; it intergrades with subsp. aurantiaca and rarely hybridizes with Chylismia brevipes subsp. arizonica.
Selected References
None.