E-Flora BC: Electronic Atlas of the Flora of British Columbia

Schoenoplectus acutus (Muhl. ex Bigelow) Á. Löve & D. Löve
hard-stemmed bulrush (hardstem bulrush)
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #19743)

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Distribution of Schoenoplectus acutus
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Species Information

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General:
Perennial herb from stout rhizomes, forming large colonies; stems circular in cross-section, tapered, firm, not easily crushed between the fingers, 100-300 (500) cm tall.
Leaves:
Few, borne mainly or entirely toward the bases of the stems; sheaths prominent, well-developed; blades short, poorly-developed, or bladeless.
Fruits:
Scales pale grey-white with numerous, short, linear, reddish-brown marks, more or less sticky short-hairy, mostly (3) 3.5-4 mm long, broadly egg-shaped, the margins somewhat irregularly jagged or fringed with cobwebby, soft, long-tangled hairs, the midri

Source: The Illustrated Flora of British Columbia

Habitat / Range

Marshes, lakeshores and streams in the lowland, steppe and montane zones; common throughout BC south of 56degreeN, less frequent northward; N to AK and YT, E to NF and S to TN, GA, TX, NM and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Schoenoplectus acutus

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 1 804 1260
Slope Gradient (%) 0 0 20
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
40 152 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 7 8
Modal Nutrient Regime
Class
D
Number of field plots
 species was recorded in:
106
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: BG(6), CDF(12), CWH(17), ICH(7), IDF(48), MS(3), PP(1), SBPS(4), SBS(6)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

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General References