Camissoniopsis ignota |
Camissoniopsis hardhamiae |
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jurupa hills sun cup |
Hardham's evening-primrose |
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Habit | Herbs annual, strigillose, usually also sparsely villous, often also glandular puberulent distally. | Herbs annual, villous, also glandular puberulent distally. |
Stems | arising from base, usually decumbent, rarely with only 1, erect stem, 10–55 cm. |
erect, with 1 or more branches from basal rosette, to 60 cm. |
Leaves | 1.5–7 × 0.3–1.3 cm; petiole (0–)0.2–2.5 cm, petiolate distally; blade narrowly lanceolate, lanceolate, or narrowly elliptic, base attenuate, margins serrulate, 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 (1.1–)1.8–3 mm; sepals 2.6–5.5 mm; petals yellow, sometimes red-dotted near base, (3–)4–8 mm; episepalous filaments (1.2–)2.5–3.6 mm, epipetalous filaments (1–)1.3–2 mm, anthers (0.6–)0.8–1.6 mm, less than 5% of pollen grains 4- or 5-pored; style (3–)4.5–7 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 | very slender, usually much contorted, irregularly to 5-coiled, rarely simply flexuous, terete in living material, 4-angled when dry, 20–30 × 0.8–1 mm. |
straight or 1-coiled, subterete in living material, obscurely 4-angled when dry, 13–25 × 1.3–1.6 mm. |
Seeds | 1.2–1.3 mm. |
0.7–1.1 mm. |
2n | = 14. |
= 42. |
Camissoniopsis ignota |
Camissoniopsis hardhamiae |
|
Phenology | Flowering (Jan–)Mar–Apr(–Aug). | Flowering Mar–May. |
Habitat | Clay or sandy soils, flats and slopes in coastal sage scrub or chaparral, sandy soils in mountains. | Sandy soils, limestone, disturbed oak woodlands. |
Elevation | 100–1100(–1500) m. (300–3600(–4900) ft.) | 150–1000 m. (500–3300 ft.) |
Distribution |
CA; Mexico (Baja California)
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CA |
Discussion | Camissoniopsis ignota is most common in clay fields and slopes at low elevations, but occasional on sandy soil and higher in the mountains in the Coast Ranges and bordering valleys from Yolo County, California, south to the southern end of the Sierra San Miguel, in Baja California, usually away from the immediate coast and barely reaching the margins of the desert. P. H. Raven (1969) determined C. ignota to be self-compatible and primarily autogamous. (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 | Onagraceae > subfam. Onagroideae > tribe Onagreae > Camissoniopsis | Onagraceae > subfam. Onagroideae > tribe Onagreae > Camissoniopsis |
Sibling taxa | ||
Synonyms | Oenothera micrantha var. ignota, Camissonia ignota, O. hirta var. ignota, O. ignota | Camissonia hardhamiae |
Name authority | (Jepson) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 205. (2007) | (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 204. (2007) |
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