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Montana Field Guide

Montana Field Guides

Naked-stemmed Evening-primrose - Camissonia scapoidea
Other Names:  Oenothera scapoidea

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Native Species

Global Rank: G5
State Rank: S4
C-value:


Agency Status
USFWS:
USFS:
BLM:


 

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General Description
Taprooted annual. Stems erect, branched at the base, 5–20 cm. Herbage glabrate. Leaves long-petiolate, mostly basal; the blade ovate, 1–5 cm long with sinuate margins, sometimes with a few small lobes isolated below. Inflorescence an elongating raceme. Flowers: hypanthium 2–4 mm long; sepals 2–4 mm long; petals 3–5 mm long, basally, minutely red-spotted; stigma discoid. Capsule pedicellate, spreading-erect, clavate, 1–2 cm long, straight to slightly curved, glabrous (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Wagner et al. (2007, Syst. Bot. Monogr. Vol. 83) treat this as Cyclismia scapoidea (Torr. & A. Gray) Small.

Range Comments
WA to MT south to AZ, NM, CO. Known from Carbon and Chouteau counties (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 45

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Relative Density

Recency

 

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



Habitat
Sandy or clay soil of open slopes, sagebrush steppe; plains, valleys (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
  • Web Search Engines for Articles on "Naked-stemmed Evening-primrose"
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Citation for data on this website:
Naked-stemmed Evening-primrose — Camissonia scapoidea.  Montana Field Guide.  .  Retrieved on , from