Hooker's Evening-primrose - Oenothera elata
Other Names:
Oenothera biennis, Oenothera elata ssp. hirsutissima
Status Under Review
Global Rank:
G5
State Rank:
SU
Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:
3
External Links
Taprooted biennial or short-lived perennial. Stems erect, often branched at the base, 30–100 cm. Herbage strigose, hirsute, glandular. Leaves basal and cauline, lanceolate to oblanceolate; the basal 5–15 cm, entire to weakly dentate; cauline leaves reduced upward. Flowers light yellow; hypanthium 2–4 cm long, pubescent; sepals 2–4 cm long; petals 2–4 cm long, aging orange; stigma lobes 4–5 mm long. Capsule ascending, linear, 2–4 cm long, 4-angled, strigose
(Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).