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Montana Field Guide

Montana Field Guides

Small-flower Ipomopsis - Ipomopsis minutiflora
Other Names:  Gilia minutiflora, Microgilia minutiflora

Species of Concern

Global Rank: G4
State Rank: S1S2
* (see State Rank Reason below)

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

External Links






State Rank Reason (see State Rank above)
Rare and peripheral in Montana. Currently documented in the state from one collection from the Bitterroot Valley. Very little is known about this species in the state. Additional surveys are needed. Species may be overlooked/undercollected or perhaps the Montana occurrence could be the result of a more recent and isolated establishment event.
  • Details on Status Ranking and Review
    Small-flower Ipomopsis (Ipomopsis minutiflora) Conservation Status Review
    Review Date = 11/07/2012
    View State Conservation Rank Criteria
    Population Size

    Score3 - Vey Small: Generally <2,000 individuals.

    Range Extent

    Score3 - Local Endemic or Very Small Montana Range: Generally restricted to an area <10,000 sq. miles (equivalent to the combined area of Phillips and Valley Counties) or <6 Sub-basins (4th code watersheds) Range-wide OR limited to one Sub-basin in Montana

    Area of Occupancy

    Score3 - Very Low: Generally occurring in 3 or fewer Subwatersheds (6th Code HUC’s).

    Environmental Specificity

    Score1-2 - Moderate to High.

    Trends

    ScoreNA - Rank factor not assessed.

    Threats

    ScoreNA - Rank factor not assessed.

    Intrinsic Vulnerability

    Score1-2 - Moderate to High Vulnerability.

    Raw Conservation Status Score

    Score 11 to 13 total points scored out of a possible 13 (Rarity factors only).

 
General Description
Small-flower Standing-cypress is an annual with a central stem that is 1-3 dm (4-12) tall, and with branches arising from most leaf axils. The alternate stem leaves are up to 3 cm long and are divided into 3 linear segments below, while above they are simple and linear with entire margins. Basal leaves are lacking. Foliage is glabrous to densely glandular. Small flowers are in the upper leaf axils or solitary at the tips of the numerous ultimate branches. The white or pale blue, tubular corolla is 4-7 mm long and flares to 5 lobes with 5 anthers held just beyond the mouth. The calyx is 5-lobed. The fruit is a rounded capsule with 1-3 seeds.

Diagnostic Characteristics
The plant superficially resembles Epilobium paniculatum but the latter has 4 separate petals. Our other species of Ipomopsis have basal rosettes.

Species Range
Present
 


Range Comments
Ravalli County; BC, MT south to OR and ID (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 1

(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
Open, sparsely vegetated slopes with sagebrush on fine-textured soils in the foothills zone.

References
  • Additional ReferencesLegend:   View Online Publication
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    • Abrams, L. 1951. Illustrated flora of the Pacific states: Washington, Oregon, and California. Vol. 3. Geraniaceae to Scrophulariaceae. Stanford Univ. Press, Stanford, California. 866 pp.
    • Argus, G. W. and K. M. Pryer. 1990. Rare vascular plants in Canada our natural heritage. Canadian Museum of Nature, Ottawa, Canada. 191 pp. plus maps.
    • Booth, W. E. and J. C. Wright. 1966. Flora of Montana. Part II. Dicotyledons. MSU Dept. Bot. & Microb.
    • Heidel, B. L. 1996. Noteworthy collections - Montana. Madrono 43(3):436-440.
    • Hitchcock, C. L., A. Cronquist, M. Ownbey and J. W. Thompson. 1959. Vascular plants of the Pacific Northwest, Part 4. Ericaceae through Campanulaceae. University of Washington Press, Seattle and London. 510 pp.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Peck, M.E. 1961. A manual of the higher plants of Oregon. 2nd edition. Binsford & Mort, Portland, Oregon. 936 pp.
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Citation for data on this website:
Small-flower Ipomopsis — Ipomopsis minutiflora.  Montana Field Guide.  .  Retrieved on , from