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Montana Field Guide

Montana Field Guides

Bulbous Bluegrass - Poa bulbosa

Exotic Species (not native to Montana)

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 0

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General Description
Perennial bunchgrass. Stems 20–60 cm, with a bulbous base. Leaves: blades 1–2.5 mm wide, mostly basal; ligules 1–3 mm long. Inflorescence a contracted panicle, 3–10 cm long. Spikelets 4–15 mm long. Lemmas usually transformed into small vegetative bulbs, hairy along veins. Roadsides, trailsides, open dry sites (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


Range Comments
Introduced throughout most of the U.S. Sometimes seeded in open range to compete with less desirable colonizing grasses (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 2

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Relative Density

Recency

 

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



Habitat

References
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Citation for data on this website:
Bulbous Bluegrass — Poa bulbosa.  Montana Field Guide.  .  Retrieved on , from