Camissoniopsis pallida subsp. hallii |
Camissoniopsis pallida |
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Hall's sun cup |
pale yellow sun cup |
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Habit | Herbs annual, appearing conspicuously grayish, densely strigillose, sometimes also glandular puberulent distally. | |||||
Stems | usually with decumbent lateral branches from basal rosette, 5–60 cm. |
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Leaves | 1–5(–11) × 0.2–0.7(–1.4) cm; petiole 0–0.2(–0.4) cm, distal ones sessile; blade lanceolate to narrowly ovate, base often cuneate to truncate, sometimes attenuate, margins sparsely denticulate, apex acute to obtuse. |
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Flowers | floral tube 3.8–4.2 mm; sepals 4.8–8 mm; petals with 1–3 red dots basally, 6.5–13 mm; episepalous filaments 3–6.5 mm, epipetalous filaments 1.8–3.8 mm, anthers 1.5–2.2 mm; style 6.5–10.5 mm. |
opening near sunrise; floral tube 1–4.2 mm; sepals (1.5–)2.5–8 mm; petals yellow, sometimes with 1–3 red dots basally, (2–)3.5–13 mm; episepalous filaments (0.5–)1.5–6.5 mm, epipetalous filaments (0.2–)0.5–3.8 mm, anthers (0.4–)0.8–2.2 mm, less than 5% of pollen grains 4- or 5-pored; style (2.1–)3–10.5 mm, stigma surrounded by at least anthers of longer stamens, often by both sets, at anthesis. |
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Capsules | usually 1–3-coiled spiral, subterete in living material, 4-angled when dry, 13–24 × 0.7–1.2 mm. |
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Seeds | 1–1.5 mm. |
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2n | = 14. |
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Camissoniopsis pallida subsp. hallii |
Camissoniopsis pallida |
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Phenology | Flowering Mar–May(–Jun). | |||||
Habitat | Sandy washes. | |||||
Elevation | 30–1400 m. (100–4600 ft.) | |||||
Distribution |
CA |
w United States; nw Mexico
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Discussion | Subspecies hallii occurs in Riverside and San Bernardino counties, from Banning east throughout the Little San Bernardino Mountains and their northern slopes and southeast to the vicinity of Mecca and Box Canyon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). P. H. Raven (1969) determined Camissoniopsis pallida to be self-compatible and primarily autogamous. (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 | Sphaerostigma hallii, Camissonia pallida subsp. hallii, Oenothera bistorta var. hallii, O. hallii | Sphaerostigma pallidum, Camissonia pallida, Oenothera abramsii, O. micrantha var. abramsii | ||||
Name authority | (Davidson) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 204. (2007) | (Abrams) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 205. (2007) | ||||
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