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|Family: Onagraceae||View Description||Dichotomous Key|
|Genus: Oenothera||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Oenothera speciosa Nutt.
Habit: Perennial herb, rosetted when young, forming large patches from woody caudices and rhizomes, minutely strigose (some hairs also longer). Stem: weakly ascending to erect, 1--5 dm. Leaf: cauline 2.5--8 cm, oblanceolate to +- elliptic, +- entire to wavy-lobed. Inflorescence: flowers in distal axils; stem tip nodding. Flower: hypanthium 10--23 mm; sepals 15--30 mm, free tips in bud 1--4 mm; petals 25--40 mm, white fading pink or rose-purple. Fruit: 10--25 mm, widening upward (to 3--5 mm), 8-ribbed; stalk-like base (4)8--15 mm, 1.5--2 mm wide, cylindric. Seed: clustered in each chamber, 1--1.5 mm, obliquely oblanceolate, finely granular-papillate. Chromosomes: 2n=14,28,42.
Ecology: Disturbed places; Elevation: generally < 500 m. Bioregional Distribution: SCo; Distribution Outside California: native New Mexico to central United States, central Mexico. Flowering Time: May--Sep Note: Commonly cultivated, doubtfully naturalized; cross-pollinated.
Synonyms: Oenothera speciosa var. childsii (L.H. Bailey) Munz
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 sinuosa
Next taxon: Oenothera stricta subsp. stricta
Citation for this treatment: Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner 2017. Oenothera speciosa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=35050, accessed on January 17, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 17, 2017.