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Montana Field Guide

Montana Field Guides

Alaskan Oniongrass - Melica subulata

Native Species

Global Rank: G5
State Rank: S3S4
* (see State Rank Reason below)

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

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State Rank Reason (see State Rank above)
Melica subulata is scattered throughout central and western Montana. It grows in meadows, harvest units, in open forests, and along creeks and ditches. It is tolerant of disturbances associated with roads, trails, and forestry prescriptions, but also is found in undisturbed habitats.
  • Details on Status Ranking and Review
    Alaskan Oniongrass (Melica subulata) Conservation Status Review
    Review Date =
 
General Description
PLANTS: Stems 60–120 cm tall, loosely bunched (caespitose) or in patches (rhizomatous). Most stems develop from a corm base, whereby corms attach to the rhizomes (Lesica et al. 2012).

LEAVES: Blades 2–10 mm wide with ligules 1–4 mm long (Lesica et al. 2012).

INFLORESCENCE: A narrow panicle or raceme, 10–25 cm long, and with few branches (Lesica et al. 2012).

Species Range
Present
 


Range Comments
AK to CA, east to WY.

Observations in Montana Natural Heritage Program Database
Number of Observations: 165

(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

Reproductive Characteristics
Spikelets 10–20 mm long and comprised of 4 to 8 florets. Lemmas: mostly awn-tipped (Lesica et al. 2012); 5.5-18 mm long, strongly tapering to the acuminate tips, and often strigose over the prominent 7-9 veins with hairs becoming longer toward the base (FNA 2007). Paleas: one-half to one-third the length of the lemmas (FNA 2007). Glumes: lower glume may be shorter than the upper glume, 4-11.5 mm, and mostly 3-5 veined (FNA 2007).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Flora of North America Editorial Committee. 2007. Flora of North America North of Mexico. Vol. 24. Magnoliophyta: Commelinidae (in part): Poaceae, part 1. Oxford Univ. Press, New York. xxviii + 911 pp.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Alaskan Oniongrass — Melica subulata.  Montana Field Guide.  .  Retrieved on , from