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Montana Field Guide

Montana Field Guides

Thin-leaved Owl's-clover - Orthocarpus tenuifolius

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

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

Summary of Observations Submitted for Montana
Number of Observations: 39

(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)


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Citation for data on this website:
Thin-leaved Owl's-clover — Orthocarpus tenuifolius.  Montana Field Guide.  .  Retrieved on , from