Camissoniopsis pallida subsp. pallida

Synonyms: Oenothera hirta var. exfoliata (A. Nelson) Munz O. micrantha var. exfoliata (A. Nelson) Munz Sphaerostigma micranthum var. exfoliatum A. Nelson
Treatment appears in FNA Volume 10.

Flowers: floral tube 1–3 mm; sepals (1.5–)2.5–5.5 mm; petals rarely with red dots basally, (2–)3.5–6(–8) mm; episepalous filaments (0.5–)1.5–4 mm, epipetalous filaments (0.2–)0.5–2.2 mm, anthers (0.4–)0.8–1.2 mm; style (2.1–)3–6.5 mm. 2n = 14.


Phenology: Flowering (Jan–)Mar–Aug(–Nov).
Habitat: Desert slopes and flats, along washes, creosote bush scrub, Joshua tree woodlands.
Elevation: 30–1900 m.

Distribution

Ariz., Calif., Nev., Mexico (Baja California).

Discussion

Subspecies pallida occurs from the head of the San Joaquin Valley in Ventura and Kern counties, California, across the Colorado and Mojave deserts, north to the vicinity of Independence, Inyo County, California, and Esmeralda County, Nevada (the only member of the genus in Nevada), east to Mohave and Yavapai counties, Arizona, and also in the vicinity of Tucson, Pima County; also south along the eastern side of Baja California to the Sierra de San Borjas, Mexico.

Selected References

None.

Lower Taxa

None.
Warren L. Wagner +
(Abrams) W. L. Wagner & Hoch +
Sphaerostigma pallidum +
Ariz. +, Calif. +, Nev. +  and Mexico (Baja California). +
30–1900 m. +
Desert slopes and flats, along washes, creosote bush scrub, Joshua tree woodlands. +
Flowering (Jan–)Mar–Aug(–Nov). +
Syst. Bot. Monogr. +
Oenothera hirta var. exfoliata +, O. micrantha var. exfoliata +  and Sphaerostigma micranthum var. exfoliatum +
Camissoniopsis pallida subsp. pallida +
Camissoniopsis pallida +
subspecies +