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Montana Field Guides

Short-flower Evening-primrose - Camissonia breviflora
Other Names:  Oenothera breviflora


Global Rank: G5
State Rank: S3S4
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

External Links






State Rank Reason (see State Rank above)
Camissonia breviflora is found in many counties and the most recent of observations indicate that where the plant is found it can be common.
  • Details on Status Ranking and Review
    Short-flower Evening-primrose (Camissonia breviflora) Conservation Status Review
    Review Date = 11/14/2016
    View State Conservation Rank Criteria
    Population Size

    ScoreU - Unknown

    Range Extent

    ScoreF - 10,000 - 100,000 individuals

    Area of Occupancy

    ScoreD - 6-25 4-km2 grid cells

    Number of Populations

    ScoreB - 6 - 20

    Number of Occurrences or Percent Area with Good Viability / Ecological Integrity

    ScoreC - Few (4-12) occurrences with excellent or good viability or ecological integrity

    Environmental Specificity

    ScoreC - Moderate. Generalist or community with some key requirements scarce

    Long-term Trend

    ScoreU - Unknown

    Trends

    ScoreU - Unknown

    Threats

    ScoreU - Unknown

    CommentThreats: Unknown/undetermined.

    Intrinsic Vulnerability

    ScoreC - Not intrinsically vulnerable

 
General Description
Plant: Short-lived acaulescent perennial (Lesica 2012), growing in a low tuft (caespitose) from a long taproot (Hitchcock et al. 1961), sometimes spreading by roots. Herbage nearly glabrous (without hairs) to strigose (hairs flat against the stem pointing unidirectionally) (Lesica 2012).

Leaves: All are basal, with blades narrowly lanceolate, deeply pinnately lobed, 3–10 cm long (Lesica 2012), 5-15 mm wide, and tapering to petioles ca ½ to 2/3 the length of the blade (Hitchcock et al. 1961).

Inflorescence: Flowers sessile in leaf axils (Lesica 2012).

(Lesica's contribution adapted from Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX.)

Species Range
Present
 


Range Comments
BC to SK south to NV, UT and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 17

(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 meadows (Hitchcock et al. 1961), moist, often calcareous soil of ephemeral wetlands, stream and pond margins; montane, subalpine (Lesica 2012)

(Lesica's contribution adapted from Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX.)

Reproductive Characteristics
Flowers: Hypanthium 6–15 mm long (Lesica 2012), several times the length of the ovary (Hitchcock et al. 1961), the upper expanded portion 1–2 mm long (Lescia 2012), persistent on the fertile part of the ovary (Hitchcock et al. 1961); sepals 3–5 mm long, reflexed (Lesica 2012); petals yellow, not drying to purple (unlike some others in the genus), 3–8 mm long; stamens of two heights, the taller ones a little over half the petal length; style about same height as petals (Hitchcock et al. 1961); stigma globose, slightly lobed (Lesica 2012).

Fruit: Capsule leathery, hairy (Hitchcock et al. 1961), sessile, narrowly ovoid, 10–15 mm long, slightly curved with a beak 5–10 mm long (Lesica 2012).

(Lesica's contribution adapted from Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX.)

References
  • Literature Cited AboveLegend:   View Online Publication
    • Hitchcock, C. L., A. Cronquist, M. Ownbey, and J. W. Thompson. 1961. Vascular Plants of the Pacific Northwest, Part 3. Saxifragaceae to Ericaceae. Seattle, WA and London, England: University of Washington. 614 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:
Short-flower Evening-primrose — Camissonia breviflora.  Montana Field Guide.  .  Retrieved on , from