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

Amphiscirpus nevadensis (S. Watson) Oteng Yeboah
Nevada bulrush (Nevada clubrush)
Cyperaceae (Sedge family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #14540)

E-Flora BC Static Map
Distribution of Amphiscirpus nevadensis
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.

Perennial herb from rhizomes; stems scattered or in small tufts, circular in cross-section, tapered, tough and wiry, emergent for most of their length when growing in water, 10-40 cm tall.
Several, clustered near the base; sheaths persistent; blades firm, deeply grooved to thick and flat, mostly 1-2 mm wide, up to 20 cm long, often much shorter, the lowest ones sometimes reduced to scales.
Spikes (1) 2 to 10, terminal, 1-2 cm long, in compact, unstalked clusters; involucral bracts several, one or more of them short, reddish-tinged, resembling enlarged scales, the principal, longest ones slender, stiff, green, leaflike, 1.5-7 cm long, more or less spreading, sometimes resembling extensions of the stems, but more often diverging at an angle.
Scales numerous, shining brown, largely translucent except for the paler, firm midribs, which may be exserted beyond the scales into short, sharp, slender points, not notched at the tips; perianth bristles 1 to 3 (4), slender and much reduced, finely-barbed backwards, rarely surpassing the middle of the achenes, generally unequal; styles abruptly deciduous; achenes plano-convex, pale, firm-walled, about 2 mm long, the tips not sharp-pointed.
The Eastham (1947) collection from the Fraser River delta was probably an introduction on sand dredgings.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet, usually alkaline, meadows in the steppe and montane zones; infrequent in SC BC; E to MB and S to NE, CO, UT, NV and CA; S America.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Amphiscirpus nevadensis

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




Elevation (metres) 516 1178 2360
Slope Gradient (%) 0 2 12
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 319 346
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 5 8
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: ESSF(4), IDF(11), IMA(1)


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.

Synonyms and Alternate Names

Scirpus nevadensis S. Watson

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References