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Montana Field Guide

Montana Field Guides

Rocky Mountain Fringed Gentian - Gentianopsis thermalis
Other Names:  Gentiana detonsa var. unicaulis, Gentianella detonsa var. elegans

Native Species

Global Rank: G4?Q
State Rank: SNR
C-value: 8

Agency Status


External Links

General Description
Taprooted annual or biennial, stems glabrous, usually branched. Basal leaves forming a rosette or reduced to one pair, 2-6.5 cm long, obovate-elliptic to spatulate; cauline leaves linear to spatulate. Flowers solitary, terminal, on pedicles up to 30 cm long. Calyx tube 9-14 mm, lobes 8-20 mm long; corolla 25-60 mm long, narrowly funnelform, the lobes 10-35 mm long, lateral margins ciliate to fimbriate or toothed, the apex erose to dentate (adapted from: Welsh, 1993, A Utah Flora, 2nd ed., revised).

Species Range

Range Comments
Eastern ID and MT south to NV, UT, and NM (Kartesz in prep. 2012).

Observations in Montana Natural Heritage Program Database
Number of Observations: 4

(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)

Sagebrush meadows to mountains, including aspen and spruce-fir communities (Welsh, 1993, A Utah Flora, 2nd ed., revised).

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Aho, Ken Andrew. 2006. Alpine and Cliff Ecosystems in the North-Central Rocky Mountains. Ph.D. Dissertation. Bozeman, Montana: Montana State University. 343 p.
    • 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:
Rocky Mountain Fringed Gentian — Gentianopsis thermalis.  Montana Field Guide.  .  Retrieved on , from