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Montana Field Guide

Montana Field Guides

Ross' Avens - Geum rossii var. rossii

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Status Under Review
Native Species

Global Rank: G5T5
State Rank: S1?
(see State Rank Reason below)

Agency Status


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State Rank Reason (see State Rank above)
Reported for the Mission Mountains, Lake County (Hitchcock and Cronquist 1973). More information needed to determine the status of the taxa in the state.
General Description
See species description and "Diagnostic Characters" below.

Diagnostic Characteristics
Calyx usually green or only slightly purplish-tinged, the lobes mostly strongly veined; segments of leaflets mostly 3-6 mm broad, tending to be merely toothed or lobed less than half their length; flowers mostly single and terminal, less commonly 2 or 3 (Hitchcock, 1961, Vasc. Pl. Pacific Northwest, Vol. 3).

Range Comments
A boreal taxon as far south as BC and with reports in Lake County (Missions Mountains) and Ravali County (Lackschewitz 1991).

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

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Relative Density



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

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • 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.
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Citation for data on this website:
Ross' Avens — Geum rossii var. rossii.  Montana Field Guide.  .  Retrieved on , from