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Montana Field Guide

Montana Field Guides

Leafy Lousewort - Pedicularis racemosa

Native Species

Global Rank: G5
State Rank: S4S5

Agency Status
MNPS Threat Rank:
C-value: 4

External Links

General Description
Stems 15–60 cm, clustered on the caudex. Leaves mainly cauline 2–8 cm long; blades narrowly lanceolate, serrate, not lobed. Inflorescence sparsely flowered, 3–7 cm long; bracts leaf-like. Flowers: calyx 4–8 mm long, 2-lobed, more deeply cleft adjacent to the lower lip, the lobes 1–3 mm long; corolla white, 12–15 mm long; galea 5–9 mm long with a long beak curved into a semicircle; lower lip wide, the 2 outer lobes much wider than the central one. Capsule 8–14 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety alba (Pennell) Cronquist

Species Range

Range Comments
BC, AB south to CA, AZ and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 432

(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
    Do you know of a citation we're missing?
    • Dale, D. 1973. Effects of trail use under forests in the Madison Range, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 96 pp.
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Steerey, W. F. 1979. Distribution, range use and population characteristics of Mule Deer associated with the Schafer Creek winter range, Bridger Mountains, Montana. M.Sc. Thesis. Bozeman, Montana: Montana State University. 119 p.
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Citation for data on this website:
Leafy Lousewort — Pedicularis racemosa.  Montana Field Guide.  .  Retrieved on , from