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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Onagraceae||View Description||Dichotomous Key|
|Genus: Oenothera||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Oenothera flava (A. Nelson) Garrett
Habit: Perennial herb, +- rosetted, green; hairs glandular, also generally minutely strigose; taproot fleshy. Stem: +- 0. Leaf: 3--36 cm, oblanceolate to oblong, irregularly pinnately lobed, +- fleshy. Inflorescence: flowers in axils. Flower: hypanthium 24--80 (150) mm; sepals 10--34 mm, free tips in bud 1--2(5) mm; petals 10--30(38) mm, yellow fading pale orange. Fruit: 10--40 mm, 4--7 mm wide, narrowly ovate to elliptic; wings 2--6 mm wide. Seed: 1.8--2.6 mm, obliquely wedge-shaped, minutely beaded, narrow-winged distally and along 1 margin. Chromosomes: 2n=14.
Ecology: Drying depressions, streambanks, generally clay soils, sagebrush scrub to pinyon/juniper woodland; Elevation: 900--1600 m. Bioregional Distribution: CaR, n SNH, MP; Distribution Outside California: to southern Canada, Colorado, Mexico. Flowering Time: May--Jul Note: Generally self-pollinated.
Synonyms: Oenothera flava subsp. flava
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: Oenothera elata subsp. hookeri
Next taxon: Oenothera glazioviana
Citation for this treatment: Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner 2017. Oenothera flava, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=34999, accessed on February 20, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 20, 2017.