|University of California, Berkeley|
|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 primiveris A. Gray
Habit: Annual, rosetted, minutely strigose, in inflorescence generally glandular; hairs also coarse, with red, blister-like base or not. Stem: generally 0 (sometimes erect or ascending, < 3.5 dm). Leaf: 4--28 cm, oblanceolate, wavy-dentate to 1--2-pinnately lobed. Inflorescence: flowers in axils. Flower: hypanthium 20--72 mm; sepals 7--30 mm, free tips in bud 0; petals yellow fading red-purple to orange. Fruit: 10--60 mm, 4--8 mm wide, lanceolate to ovate, straight, curved, or S-shaped. Seed: 3--3.5 mm, irregularly obovate to oblanceolate, papillate, 1 side coarsely wrinkled in distal 1/2, other side with thick, U-shaped area forming groove and small cavity at tip. Chromosomes: 2n=14.
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 longissima
Next taxon: Oenothera primiveris subsp. bufonis
Citation for this treatment: Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner 2017. Oenothera primiveris, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=35043, accessed on February 24, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 24, 2017.