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Montana Field Guide

Montana Field Guides

Western Blue Iris - Iris missouriensis


Global Rank: G5
State Rank: S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 3

External Links






 
General Description
Stems 10–50 cm. Leaves basal, 10–40 cm × 3–8 mm wide. Inflorescence of 1 to 3 flowers; spathes inflated, united at the base, sometimes membranous-margined, 4–8 cm long; pedicels 2–5 cm long. Flowers: sepals 4–6 cm long, whitish with a yellow midstripe and blue veins and margins; petals blue, 3–4 cm long; lobes of style branch white, 3–6 mm long. Capsule ellipsoid, 2–4 cm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


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

Summary of Observations Submitted for Montana
Number of Observations: 39

(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 to wet meadows thickets, woodland margins; plains, valleys, montane (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Western Blue Iris — Iris missouriensis.  Montana Field Guide.  .  Retrieved on , from