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|Family: Onagraceae||View Description||Dichotomous Key|
|Genus: Chylismiella||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Chylismiella pterosperma (S. Watson) W.L. Wagner & Hoch
Habit: Annual, from taproot; hairs bristly, in inflorescence also glandular. Stem: erect, branched, 2--14 cm, slender, peeling near base. Leaf: cauline, alternate, +- sessile; blade 3--30 mm, narrowly lanceolate to oblanceolate, entire. Inflorescence: raceme, nodding in bud. Flower: opening at dawn; hypanthium 1--2 mm; sepals 4, 1.5--2.5 mm, reflexed singly or occasionally in pairs; petals 4, 1.5--2.5 mm, notched at tip, white, with yellow area at base, fading purple; longer stamens opposite sepals, anthers attached at base, pollen grains 3-angled; stigma hemispheric, +- = anthers, self-pollinated. Fruit: (3)4-chambered, ascending or spreading, 12--28 mm, 0.6--0.8 mm wide, straight or slightly curved, cylindric, slightly swollen by seeds; pedicel 4--8 mm. Seed: in 2 rows per chamber, 1--1.5 mm, with concave and convex sides, concave side with a thick wing, both sides densely covered with glassy club-shaped hairs. Chromosomes: 2n=14.
Ecology: Uncommon. Well-drained, generally volcanic slopes, pinyon/juniper woodland, sagebrush scrub; Elevation: 1400--2400 m. Bioregional Distribution: W&I (Inyo Mtns), DMtns (Panamint Range); Distribution Outside California: to Oregon, western Utah, northwestern Arizona. Flowering Time: May--Jun Note: Self-pollinated.
Synonyms: Camissonia pterosperma (S. Watson) P.H. Raven; Oenothera pterosperma S. Watson
eFlora Treatment Author: Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner
Jepson Online Interchange
Previous taxon: Chylismiella
Next taxon: Circaea
Citation for this treatment: Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner 2017. Chylismiella pterosperma, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=89219, accessed on February 21, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 21, 2017.