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Oenothera howardii

Family: onagraceae
Common name(s): Howard's Evening Primrose; Yellow Stemless Evening Primrose
Hardiness ratings: USDA zone 4

General resources

• Wikipedia. Online encyclopedia entry (if defined).
• Google images. Web search for photographs.
• The Plant List. Taxonomical lookup
• Catalogue of Life. Taxonomical lookup
• Dave's Garden. Search the extensive PlantFiles database.

Links for Oenothera howardii

• Denver Botanic Gardens - Description, native range, and cultural requirements. (zone 4) (6 photos)
• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation.