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

Graphephorum wolfii
Wolf's trisetum
Poaceae (Grass family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #15794)

E-Flora BC Static Map
Distribution of Graphephorum wolfii
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Species Information

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Perennial, loosely tufted grass from fibrous roots or short rhizomes; stems mostly 40-80 (100) cm tall.
Sheaths usually minutely rough but sometimes soft-hairy; blades flat, rough to sparsely soft-hairy, 2-4 (6) mm wide; ligules minutely short hairy externally, squared-off, more or less fringed with fine hairs, 2.5-4 mm long.
Inflorescence a narrow panicle, 8-15 cm long, the branches erect or ascending; spikelets 2- to 3-flowered, usually purplish before flowering, nearly unstalked; rachilla joints about 1.5 mm long, sparsely stiff-hairy, the hairs about 1 mm long; glumes nearly equal in width and length, usually exceeding the lower or even the upper florets, the lower ones 4-6 (6.5) mm long, the upper ones 5.5-7 mm long; lemmas 4-5 mm long, blunt, unawned or with awns rarely exceeding the lemmas, the calluses very sparsely hairy, with hairs about 1 mm long; lodicules oblong, slenderly lobed to fringed with hairs, about 1 mm long; anthers up to 1.5 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet meadows and moist streamsides in the subalpine zone; rare in S BC east of the Coast-Cascade Mountains; E to SK and S to NM, UT, NV and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Graphephorum wolfii

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) 1726 1726 1726
Slope Gradient (%) 0 0 0
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 6 6
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(1)

Synonyms and Alternate Names

Trisetum wolfii Vasey

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References