Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Three-leaf Bitterroot - Lewisia triphylla

Global Rank: G4?
State Rank: S4
* (see State Rank Reason below)

Agency Status
MNPS Threat Rank:

External Links

State Rank Reason (see State Rank above)
Numerous recent collections from secure habitats. Possibly undercollected.
General Description
Roots a globose corm 5–15 mm across. Stems 1 to many, ascending, 2–6 cm. Basal leaf blades linear, 1–6 cm long, absent at flowering. Stem leaves opposite or whorled, linear, 1–4 cm long. Flowers in bracteate cymes; sepals 2, 2–5 mm long with entire margins; petals 5 to 9, white to pink, 5–7 mm long; stamens 5; style branches 3 to 5 (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Diagnostic Characteristics
Possibly confused with early-season Montia linearis or M. dichotoma, which occur in lowlands and are not known in Montana.

Species Range

Range Comments
Western MT east to Park County; WA to MT south to CA and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 1

(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)

Seepy and seasonally moist sites, usually where sandy or gravelly, rarely on finer soils. Mostly occurs in high-montane and subalpine habitats.

Login Logout
Citation for data on this website:
Three-leaf Bitterroot — Lewisia triphylla.  Montana Field Guide.  .  Retrieved on , from