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Montana Field Guide

Montana Field Guides

Thin-leaved Owl's-clover - Orthocarpus tenuifolius

Native Species

Global Rank: G4G5
State Rank: S4
(see State Rank Reason below)

Agency Status
MNPS Threat Rank:
C-value: 4

External Links

State Rank Reason (see State Rank above)
Widespread in western and central counties. Not often abundant within its habitats. Many populations in range that has been grazed for a long period of time.
General Description
Stems erect, mostly simple,10–25 cm. Herbage puberulent. Leaves linear with 1 or 2 pairs of linear lobes, 1–3 cm long. Inflorescence bracts ovate, entire or with a pair of linear lobes, ciliate, pink-tipped. Flowers: calyx 5–9 mm long, ultimate lobes linear, 2–6 mm long; corolla 15–18 mm long, yellow, galea 4–7 mm long, upper lip projecting beyond the lower lip. Capsule 5–8 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range


Range Comments
BC, MT south to OR and ID (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 178

(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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    • Johnson, T. W. 1982. An analysis of pack and saddle stock grazing areas in the Bob Marshall Wilderness. M.Sc.Thesis. Bozeman, MT: Montana State University. 105 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Martinka, R.R. 1970. Structural characteristics and ecological relationships of male blue grouse (Dendragapus obscurus (Say)) territories in southwestern Montana. Ph.D Dissertation. Bozeman, MT: Montana State University. 73 p.
  • Web Search Engines for Articles on "Thin-leaved Owl's-clover"
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Citation for data on this website:
Thin-leaved Owl's-clover — Orthocarpus tenuifolius.  Montana Field Guide.  .  Retrieved on , from