E-Flora BC: Electronic Atlas of the Flora of British Columbia

Oenothera glazioviana Micheli
red-sepaled evening-primrose (redsepal evening-primrose)
Onagraceae (Evening Primrose family)

Introduction to Vascular Plants

© Virginia Skilton  Email the photographer   (Photo ID #14743)

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Distribution of Oenothera glazioviana
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Species Information

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Biennial herb from a taproot; forming rosette in first year and erect stem in second; densely minutely-stiff-hairy, with spreading hairs from red blister-like bases, glandular in inflorescence; stems 50-150 cm tall.
Stem leaves alternate, elliptic to lanceolate, 5-15 cm long, nearly entire to toothed, crinkled, hairy.
Inflorescence a spike, the buds erect, opening in the evening, subtended by large bracts or reduced leaves; hypanthium 3.5-5 cm long; petals yellow, fading reddish-orange, 3.5-5 cm long; sepals 2.8-4.5 cm long, lobes 4, bent back in flower, the free tips in bud 5-8 mm long; stigmas deeply 4-lobed.
Capsules, erect, narrowly lanceolate, 2-3.5 cm long, 5-6 mm wide, more or less straight, 4-chambered, hairy; seeds 1.3-2 mm long, angled, irregularly pitted, about half sterile.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry roadsides and waste places in the lowland and steppe zones; infrequent garden escape in S BC, especially along the coast; thought to be originally of garden origin in Eurasia.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Oenothera erythrosepala
Oenothera lamarckiana auct.

Taxonomic and Nomenclatural Links

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General References