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Montana Field Guide

Montana Field Guides

Alpine Bitterroot - Lewisia pygmaea


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 5

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General Description
Roots fleshy and branched with a simple caudex. Stems erect or ascending, 1–4 cm with a pair of bracts below the middle. Basal leaf blades linear, 1–8 cm long. Stem leaves absent. Flowers solitary; sepals 2, mostly glandular-toothed, 2–10 mm long, enlarging in fruit; petals 6 to 8, white to magenta, 4–10 mm long; stamens 5 to 8; style branches 3 to 6 (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Much of western and central MT; YT to AB, south to CA and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 19

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Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat
Sandy, gravelly or shallow, vernally wet soil of banks, rock ledges, grasslands, meadows, open slopes, often near receding snow banks; montane to alpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Alpine Bitterroot — Lewisia pygmaea.  Montana Field Guide.  .  Retrieved on , from