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Montana Field Guide

Montana Field Guides

Small-flowered Evening-primrose - Camissonia minor
Other Names:  Oenothera minor

Potential Species of Concern

Global Rank: G4
State Rank: S3S4

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

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General Description
Taprooted annual. Stems slender, erect, 5–20 cm, branched from the base. Herbage glabrate, glandular above. Leaves petiolate, mostly basal; the blade oblanceolate, 1–5 cm long. Inflorescence a leafy-bracteate spike. Flowers: hypanthium 1–3 mm long; sepals 1–2 mm long, reflexed; petals 1–2 mm long, white; stigma globose. Capsule sessile, linear, straight to contorted, 4-angled, glandular-puberulent, 8–25 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Wagner et al. (2007, Syst. Bot. Monogr. Vol. 83) treat this as Eremothera minor (A. Nelson) W.L. Wagner & Hoch.

Species Range
Present
 


Range Comments
WA to MT south to CA, NV, UT and CO. Known from Carbon County (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 21

(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
Dry sandy or gravelly soil of juniper woodlands or plant associations dominated by Artemisia tridentata.

References
  • Additional ReferencesLegend:   View Online Publication
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    • Lesica, P. and P.L. Achuff. 1992. Distribution of vascular plant species of special concern and limited distribution in the Pryor Mountain desert, Carbon County, Montana. Unpublished report to the Bureau of Land Management. Montana Natural Heritage Program, Helena, MT. 105 pp.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Small-flowered Evening-primrose — Camissonia minor.  Montana Field Guide.  .  Retrieved on , from