Camissoniopsis hirtella |
Camissoniopsis hardhamiae |
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hairy sun cup, Santa Cruz Island suncup |
Hardham's evening-primrose |
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Habit | Herbs annual, densely villous throughout, also glandular puberulent distally. | Herbs annual, villous, also glandular puberulent distally. |
Stems | erect, with 1 or more ascending branches from near base, to 60 cm. |
erect, with 1 or more branches from basal rosette, to 60 cm. |
Leaves | 1–11 × 0.3–2.1 cm; petiole 0–5 cm, distal ones 0–0.5 cm; blade lanceolate to ovate, sometimes elliptic-ovate or ovate distally, base cordate to truncate, sometimes cuneate or attenuate, margins dentate, apex acute. |
1–12 × 0.4–1.8 cm; subsessile; blade lanceolate, narrowly elliptic, or narrowly ovate, base truncate, margins dentate, apex acute. |
Flowers | opening near sunrise; floral tube 1–3 mm; sepals 2.5–6 mm; petals yellow, sometimes red-dotted near base, 2–9 mm, sometimes with a tooth arising from emarginate apex; episepalous filaments 1.2–6 mm, epipetalous filaments 0.5–3 mm, anthers 0.4–1 mm, less than 5% of pollen grains 4- or 5-pored; style 2–8 mm, stigma surrounded by anthers at anthesis. |
opening near sunrise; floral tube 1.7–2 mm; sepals 1.8–3.2 mm; petals yellow, immaculate, 2–4 mm; episepalous filaments 1.5–2 mm, epipetalous filaments 1–1.5 mm, anthers 0.7 mm, 70–100% of pollen grains 4- or 5-pored; style 3–4 mm, stigma surrounded by anthers at anthesis. |
Capsules | 1–2-coiled spiral, subterete in living material, 4-angled when dry, 13–20(–25) × 0.7–0.9 mm. |
straight or 1-coiled, subterete in living material, obscurely 4-angled when dry, 13–25 × 1.3–1.6 mm. |
Seeds | 1–1.2 mm. |
0.7–1.1 mm. |
2n | = 14. |
= 42. |
Camissoniopsis hirtella |
Camissoniopsis hardhamiae |
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Phenology | Flowering (Jan–)Mar–Jul(–Nov). | Flowering Mar–May. |
Habitat | Brushy hills and slopes, on burns. | Sandy soils, limestone, disturbed oak woodlands. |
Elevation | 0–2300 m. (0–7500 ft.) | 150–1000 m. (500–3300 ft.) |
Distribution |
CA; Mexico (Baja California)
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CA |
Discussion | Camissoniopsis hirtella occurs from Amador and Trinity counties southward in the Coast Ranges and Sierra Nevada of California to the Sierra de Juárez and Sierra San Pedro Mártir, Baja California, usually away from the immediate coast and barely reaching the margins of the desert. P. H. Raven (1969) determined C. hirtella to be self-compatible and primarily autogamous. The species occasionally hybridizes with C. ignota (Raven). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Camissoniopsis hardhamiae is narrowly endemic to the Outer South Coast Ranges. Populations are very local, known only from a few localities in sandy soil in disturbed oak woodland, southernmost Monterey to central San Luis Obispo County. P. H. Raven (1969) determined C. hardhamiae to be self-compatible and primarily autogamous. The species is apparently a hexaploid derived via hybridization between the tetraploid C. intermedia (2n = 28) and the diploid C. micrantha (2n = 14). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 10. | FNA vol. 10. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Oenothera hirtella, Camissonia hirtella, O. hirta var. jonesii, O. micrantha var. hirtella, O. micrantha var. jonesii, O. micrantha var. reedii, Sphaerostigma arenicola, S. bistortum var. reedii, S. hirtellum, S. hirtellum var. montanum, S. micranthum var. jonesii | Camissonia hardhamiae |
Name authority | (Greene) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 204. (2007) | (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 204. (2007) |
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