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Kern River evening-primrose

Habit Herbs sparsely strigillose or glabrate, more densely so distally.
Stems

usually erect, sometimes decumbent, slender, wiry, usually many-branched, to 30 cm.

Leaves

proximalmost not clustered near base;

blade linear, 1–3 × 0.1–0.3 cm, base cuneate or attenuate, margins usually entire, rarely with 1 or 2 small teeth, apex acute.

Flowers

opening near sunrise;

floral tube 1.5–2.5 mm, moderately to sparsely pubescent inside on proximal 1/2;

sepals 1.6–4 mm, reflexed in pairs;

petals 2–4.2 mm, each ± with 2 red dots basally; episepalous filaments 0.9–2.1 mm, epipetalous filaments 0.5–1.4 mm, anthers 0.3–0.6 mm, pollen with usually less than 10% of grains 4-pored;

style 2.3–4.8 mm, stigma surrounded by anthers at anthesis.

Capsules

45–60 × 0.8–1.3 mm;

subsessile.

Seeds

1–2 × 0.4–0.5 mm.

2n

= 28.

Camissonia integrifolia

Phenology Flowering Apr–May.
Habitat Sagebrush slopes.
Elevation 700–1000 m. (2300–3300 ft.)
Distribution
from FNA
CA; Mexico (Baja California)
[BONAP county map]
Discussion

Camissonia integrifolia is known in the flora area from central to southern California, west of the Sierra Nevada.

P. H. Raven (1969) determined that Camissonia integrifolia is a self-compatible tetraploid and autogamous. The species forms sterile natural hybrids with C. strigulosa, to which it is presumably most closely related.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Camissonia
Sibling taxa
C. benitensis, C. campestris, C. contorta, C. kernensis, C. lacustris, C. parvula, C. pubens, C. pusilla, C. sierrae, C. strigulosa
Name authority P. H. Raven: Contr. U.S. Natl. Herb. 37: 344, fig. 62. (1969)
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