Chylismia brevipes subsp. pallidula |
Chylismia brevipes |
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pale sun cup |
golden suncup, Mojave suncup, yellow cups |
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Habit | Herbs slender, usually branched distally, usually strigillose, sometimes also villous proximally. | Herbs annual, moderately to densely villous, sometimes strigillose. | ||||||||
Stems | branched, 3–75 cm. |
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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. |
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Racemes | nodding, mostly elongating after flowers. |
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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. |
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. |
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Capsules | 20–42 mm; pedicel 2–10 mm. |
ascending or spreading, oblong-cylindrical, 18–92 mm; pedicel 2–20 mm. |
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Seeds | 1–1.5 mm. |
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2n | = 14. |
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Chylismia brevipes subsp. pallidula |
Chylismia brevipes |
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Phenology | Flowering Mar–May. | |||||||||
Habitat | Dry flats, desert pavement, with Ambrosia dumosa and Larrea. | |||||||||
Elevation | 70–1100 m. (200–3600 ft.) | |||||||||
Distribution |
AZ; CA; NV; UT |
sw United States
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Discussion | 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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 3 (3 in the flora). P. H. Raven (1962, 1969) determined this species to be self-incompatible. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 10. | FNA vol. 10. | ||||||||
Parent taxa | ||||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Oenothera brevipes var. pallidula, Camissonia brevipes subsp. pallidula, O. brevipes subsp. pallidula, O. pallidula | Oenothera brevipes, Camissonia brevipes | ||||||||
Name authority | (Munz) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 206. (2007) | (A. Gray) Small: Bull. Torrey Bot. Club 23: 194. (1896) — (as Chylisma) | ||||||||
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