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Montana Field Guide

Montana Field Guides

Eight-petal Mountain-avens - Dryas octopetala


Global Rank: G5
State Rank: S5

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

External Links






 
General Description
Leaf blades lanceolate, 8–25 mm, crenate the entire length. Scapes 1–6 cm high. Flowers erect; calyx lobes 5–8 mm long; petals white, elliptic, 10–15 mm long, spreading. Achenes ca. 3 mm long; styles 15–25 mm long (Juz.) Hulten (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Montana plants are subspecies hookeriana.

Species Range
Present
 


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

Summary of Observations Submitted for Montana
Number of Observations: 113

(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
Stony soil of exposed slopes, fellfields, moist turf; alpine, less common subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Eight-petal Mountain-avens — Dryas octopetala.  Montana Field Guide.  .  Retrieved on , from