Three-leaf Bitterroot - Lewisia triphylla
(see State Rank Reason below)
MNPS Threat Rank
State Rank Reason (see State Rank above)
Numerous recent collections from secure habitats. Possibly undercollected.
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)
Possibly confused with early-season Montia linearis or M. dichotoma, which occur in lowlands and are not known in Montana.
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).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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Map Help and Descriptions
(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.
- 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.