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|Family: Onagraceae||View Description||Dichotomous Key|
|Genus: Oenothera||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Oenothera cavernae Munz
Habit: Winter or spring annual, rosetted, from a +- fleshy tapering taproot. Stem: 0 or with a central and generally several lateral stems to +- 3--4 cm. Leaf: (0.5)2.5--13(19.5) cm, (0.2)0.6--2.3(2.7) cm wide, oblanceolate to elliptic-oblanceolate or lyre-shaped and pinnately lobed to nearly entire, green to red-green, lustrous, generally with numerous scattered red-purple splotches, minutely glandular-hairy, sometimes also sparsely rough-coarse-hairy, finely crenate-dentate to entire. Inflorescence: flowers in axils. Flower: hypanthium 20--37(47) mm; sepals 4.5--12 mm, without free tips in bud; petals 6.5--20(25) mm, white, fading to a pale pink. Fruit: 12--38 mm, 6--14 mm wide, ellipsoid-ovoid to ovoid, tapering to a sterile beak 2--8 mm, valves with 8--20 nearly distinct tubercles or with a wavy ridge, dehiscing 1/3--1/2; sessile (pedicel <= 1 cm). Seed: 2.5--3.1 mm, 1.1--1.4 mm wide, obovoid, with a cavity on one side, membrane 0. Chromosomes: 2n=14.
Ecology: Joshua-tree woodland, desert scrub in dry, gravelly (often calcareous) soils on slopes, cliffs, and ridges; Elevation: 760--1280 m. Bioregional Distribution: DMtns (e Clark Mtn Range, also base of range in Ivanpah Valley); Distribution Outside California: southern Nevada, southern Utah, northern Arizona. Flowering Time: Apr--May Note: Self-pollinated.
eFlora Treatment Author: Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Oenothera californica subsp. eurekensis
Next taxon: Oenothera cespitosa
Citation for this treatment: Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner 2017. Oenothera cavernae, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=34982, accessed on February 22, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 22, 2017.