Flora of Scotts Creek Watershed
Oenothera elata ssp. hookeri - Hooker's Evening-primrose
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Family Name: Onagraceae
Common Names: Hooker's Evening-primrose, Common Evening Primrose
Origin: Native to California
Habitat: Moist places, sandy bluffs, coastal and slightly inland. Below 200 m.
Life Form and Duration: Perennial, Bienni Herb, up to 80 cm tall
Comments on overall growth: Single stout, generally unbranched, erect stem. Plant covered with dense minute straight, stiff, appressed glandular hairs, also with longer hairs.
Foliage Description: Leaves cauline, oblanceolate to lancelate or elliptic, 4-25 cm, becoming smaller as progress up stem.
Flower Description: Many large flowers in a spike at top of stem, 5-7.5 cm wide. 4 showy petals above ovary, yellow fading to reddish-orange, 2.5-5.2 cm long, notched tip. Sepals reddish. Stigma with 4 distinct linear lobes like a cross, 8 stamens.
Flowering Season: June-September
Fruit Type: Capsule
Fruit Description: 2-6.5 cm long by 4-7 mm wide, slender, rigid, mostly straight. Seeds 1-2 mm.