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Montana Field Guide

Montana Field Guides

Alpine Collomia - Collomia debilis

Native Species

Global Rank: G5
State Rank: S4

Agency Status
MNPS Threat Rank:

External Links

General Description
Perennial with a deeply buried taproot. Stems mostly prostrate, naked, buried beneath stones with only the ascending leafy tips in evidence, 2–10 cm long. Herbage puberulent to glandular-pubescent. Leaves short-petiolate; blade linear-lanceolate to oblong, 7–25 mm long. Inflorescence clusters of several sessile flowers at stem tips. Flowers: calyx 5–9 mm long; corolla white to blue, the tube 8–13 mm long, lobes 3–10 mm long; stamens exserted, all attached at the same level (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are varieties debilis and camporum Payson.

Species Range

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

Observations in Montana Natural Heritage Program Database
Number of Observations: 3

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



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


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Citation for data on this website:
Alpine Collomia — Collomia debilis.  Montana Field Guide.  .  Retrieved on , from