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Montana Field Guides

Flat-topped Broomrape - Orobanche corymbosa

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Potential Species of Concern
Native Species

Global Rank: G4
State Rank: S3S4
State Threat Score: No Known Threats
C-value:


Agency Status
USFWS:
USFS:
BLM:


 

External Links

 
General Description
Stems 1–4 cm above ground. Herbage purplish, puberulent. Inflorescence a glandular, crowded, bracteate corymb; pedicels ascending to erect, 3–9 mm long. Flowers: calyx 11–17 mm long; sepals linear, 7–14 mm long; corolla 20–25 mm long, light purple, yellowish within the mouth, the lobes 6–8 mm long. Capsule 8–14 mm long (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions

Native
 


Range Comments
WA to MT south to CA, NV and UT (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 25

(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
Predicted Suitable Habitat Model

This species has a Predicted Suitable Habitat Model available.

To learn how these Models were created see mtnhp.org/models

Ecology
POLLINATORS
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus pensylvanicus (Colla and Dumesh 2010).


References
  • Literature Cited AboveLegend:   View Online Publication
    • Colla, S.R. and S. Dumesh. 2010. The bumble bees of southern Ontario: notes on natural history and distribution. Journal of the Entomological Society of Ontario 141:39-68.
    • 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?
    • Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.
    • Heidel, B.L. 1995. Sensitive plant survey at the southern end of the Elkhorn Mountains, Broadwater and Jefferson Counties, Montana. Unpublished report to the Bureau of Land Management. Montana Natural Heritage Program, Helena, Montana. 12 pp. plus appendices.
    • Lesica, P. 1992. Vascular plant and sensitive plant species inventory for the Highland Mountains, Deerlodge National Forest. Unpublished report prepared for the Deerlodge National Forest. Montana Natural Heritage Program, Helena, MT. 21 pp. plus appendices, photographs.
    • 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 "Flat-topped Broomrape"
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Citation for data on this website:
Flat-topped Broomrape — Orobanche corymbosa.  Montana Field Guide.  .  Retrieved on , from