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Montana Field Guide

Montana Field Guides

Rough False Pennyroyal - Hedeoma hispida

Native Species

Global Rank: G5
State Rank: S4S5

Agency Status
MNPS Threat Rank:

External Links

General Description
Annual. Stems erect, branched below, 4–20 cm, strigose. Leaves 10–15 mm long, ca. glabrous, sometimes cilliate. Verticillasters of 4 to 10 flowers. Flowers: calyx hispid, 4–6 mm long; corolla lavender, 4–5 mm long(Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
AB to VT, south to MT, TX and MS (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 169

(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)


  • Additional ReferencesLegend:   View Online Publication
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    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Peterson, J.G. 1969. The food habits and summer distribution of juvenile sage grouse in central Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 39 p.
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Citation for data on this website:
Rough False Pennyroyal — Hedeoma hispida.  Montana Field Guide.  .  Retrieved on , from