Difference between revisions of "Camissoniopsis hardhamiae"
Syst. Bot. Monogr. 83: 204. 2007.
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|subfamily=Onagraceae subfam. Onagroideae | |subfamily=Onagraceae subfam. Onagroideae | ||
|tribe=Onagraceae tribe Onagreae | |tribe=Onagraceae tribe Onagreae | ||
Latest revision as of 10:33, 9 May 2022
Herbs annual, villous, also glandular puberulent distally. Stems erect, with 1 or more branches from basal rosette, to 60 cm. Leaves 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 1.7–2 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 straight or 1-coiled, subterete in living material, obscurely 4-angled when dry, 13–25 × 1.3–1.6 mm. Seeds 0.7–1.1 mm. 2n = 42.
Phenology: Flowering Mar–May.
Habitat: Sandy soils, limestone, disturbed oak woodlands.
Elevation: 150–1000 m.
Discussion
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).
Selected References
None.