Chylismia brevipes |
Chylismia megalantha |
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golden suncup, Mojave suncup, yellow cups |
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Habit | Herbs annual, moderately to densely villous, sometimes strigillose. | Herbs annual, glandular pubescent throughout. | ||||||||
Stems | branched, 3–75 cm. |
several, 10–200 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. |
in poorly defined basal rosette and cauline; petiole 1.8–5.5 cm; blade unlobed, broadly cordate to ovate, 2.4–8 × 7 cm, margins sinuate-dentate, yellowish oil cells prominently lining veins abaxially. |
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Racemes | nodding, mostly elongating after flowers. |
erect, elongating in flower. |
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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. |
opening at sunrise; buds without free tips; floral tube 4–9 mm, with matted, villous hairs inside; sepals 4.5–9 mm; petals pale to dark lavender, diffusely purplish-flecked near base, white at very base, fading darker lavender, 9–14 mm; stamens unequal, filaments of antisepalous stamens 6–12 mm, of antipetalous ones 3.5–8 mm, anthers 2 mm, glabrous; style 14–22.5 mm, stigma exserted beyond anthers at anthesis. |
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Capsules | ascending or spreading, oblong-cylindrical, 18–92 mm; pedicel 2–20 mm. |
erect or ascending, clavate, 8–14 mm; pedicel 2–3.5 mm. |
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Seeds | 1–1.5 mm. |
1–1.3 mm. |
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2n | = 14. |
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Chylismia brevipes |
Chylismia megalantha |
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Phenology | Flowering Jun–Oct. | |||||||||
Habitat | Rubble derived from volcanic tuff, partly on moist soil along springs. | |||||||||
Elevation | 1200–1400 m. (3900–4600 ft.) | |||||||||
Distribution | sw United States
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NV |
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Discussion | 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.) |
Chylismia megalantha is known from around Frenchman Drainage to French Peak and Skull Mountain in southern Nye County. P. H. Raven (1962, 1969) determined this species to be self-compatible, but outcrossing. (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 | Onagraceae > subfam. Onagroideae > tribe Onagreae > Chylismia > sect. Chylismia | Onagraceae > subfam. Onagroideae > tribe Onagreae > Chylismia > sect. Chylismia | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Oenothera brevipes, Camissonia brevipes | Oenothera heterochromas. var. megalantha, Camissonia megalantha, O. megalantha | ||||||||
Name authority | (A. Gray) Small: Bull. Torrey Bot. Club 23: 194. (1896) — (as Chylisma) | (Munz) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 207. (2007) | ||||||||
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