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Montana Field Guide

Montana Field Guides

Short-stem Onion - Allium brevistylum


Global Rank: G4
State Rank: S4S5

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

External Links






 
General Description
Bulbs elongate-ovoid on a thick rhizome; outer coat dirty white, membranous with elongate cells, often wrapped in old gray, parallel fibers. Scapes flattened, 12–50 cm. Leaves 2–5, linear, 2–6 mm wide, persistent. Umbel narrow-hemispheric with 7–15 flowers; pedicels 5–20 mm long; bracts 2, ovate, acute to acuminate. Flowers magenta; tepals 6–12 mm long; ovary crestless; stigma 3-lobed; stamens included. Seed surface minutely roughened (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
MT south to UT and NM (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 16

(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, woodlands, open forest, thickets, especially aspen groves, riparian areas; valleys to lower subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
Short-stem Onion — Allium brevistylum.  Montana Field Guide.  .  Retrieved on , from