Flora of North America species comparison

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Oenothera californica subsp. californica
Photo is of parent taxon

California evening primrose
Habit Herbs perennial, densely strigillose and villous, sometimes glabrous; from a taproot, lateral roots producing adventitious shoots.
Stems

ascending to decumbent, unbranched or branched, new rosettes not forming at branch apex, 10–40 cm.
Leaves

blade oblong to oblanceolate to spatulate, margins usually entire or weakly dentate, sometimes more conspicuously dentate to pinnatifid.
Flowers

floral tube 20–40 mm;

sepals 15–25 mm;

petals 15–30 mm.
Capsules

30–55 mm.
2n

= 28.

Oenothera californica subsp. californica
Phenology Flowering Apr–Jul(–Sep).
Habitat Sandy or gravelly areas, open, coastal-sage scrub, chaparral, oak woodlands.
Elevation 90–2000 m. (300–6600 ft.)
Distribution
from FNA
CA; Mexico (Baja California)
[BONAP county map]
Discussion

Subspecies californica occurs in southwestern California from San Luis Obispo County south and into the Little San Bernardino Mountains to northern Baja California (Sierra de San Pedro Mártir).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Oenothera > sect. Anogra > Oenothera californica
Sibling taxa
O. californica subsp. avita, O. californica subsp. eurekensis
Synonyms O. albicaulis var. melanosperma, O. californica var. glabrata
Name authority unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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