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Montana Field Guide

Montana Field Guides

American Bistort - Polygonum bistortoides
Other Names:  Bistorta bistortoides


Global Rank: G5
State Rank: S5

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 6

External Links






 
General Description
Perennial from a corm-like rhizome. Stems erect, simple, 15–80 cm. Leaves: basal petiolate, the blades 2–15 cm long, narrowly lanceolate; cauline leaves smaller, linear; stipules 5–40 mm long, glabrous, brown. Flowers 3–4 mm long, in a short-cylindric spike 1–4 cm long; pedicels spreading 2–8 mm long; tepals white to pink; stamens exserted. Achene 3-sided, shiny pale brown, 3–4 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
BC, AB south to CA, AZ and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 117

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

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



Habitat
Moist grasslands, meadows, turf where wet early but drying later in the season; 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:
American Bistort — Polygonum bistortoides.  Montana Field Guide.  .  Retrieved on , from