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Montana Field Guide

Montana Field Guides

Hairy Evening-primrose - Oenothera villosa
Other Names:  Oenothera strigosa


Global Rank: G5
State Rank: SNR

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 1

External Links






 
General Description
Taprooted biennial or short-lived perennial. Stems erect, simple or branched at the base, 30–100 cm. Herbage strigose, sparsely hirsute, glandular above. Leaves basal and cauline, lanceolate to oblanceolate; the basal 7–20 cm, deciduous, entire to weakly dentate; cauline leaves reduced upward. Flowers light yellow; hypanthium 2–4 cm long, glandular-puberulent; sepals 1–2 cm long; petals 8–15 mm long; stigma lobes 4–7 mm long. Capsule ascending, linear, 2–5 cm long, cylindric, strigose, hirsute (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC to MB south to CA, AZ and OK (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 10

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Usually disturbed soil of roadsides, fields, streambanks; plains, valleys (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Hairy Evening-primrose — Oenothera villosa.  Montana Field Guide.  .  Retrieved on , from