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Montana Field Guide

Montana Field Guides

Woolgrass Bulrush - Scirpus atrovirens

Status Under Review

Global Rank: G5
State Rank: SU

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

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General Description
Stems 30–80 cm, clustered on short rhizomes. Leaves: blades 4–8 mm wide; basal sheaths green to tan. Inflorescence of few or several globose heads on short peduncles. Spikelets 2–5 mm long. Scales 1–1.5 mm long, blackish with pale midribs; tip acute to apiculate. Flowers: bristles 6, straight or curved, white, spinulose, ca. as long as the achene; stigmas 3. Achene obscurely 3-sided, white to light brown, ca. 1 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
MT to NL south to AZ, TX and GA. Collected in Flathead County (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat

References
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Citation for data on this website:
Woolgrass Bulrush — Scirpus atrovirens.  Montana Field Guide.  .  Retrieved on , from