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

Torreyochloa pallida var. pauciflora (Torr.) Church
weak false-manna
Poaceae (Grass family)

Introduction to Vascular Plants

© Adolf Ceska  Email the photographer   (Photo ID #20753)

E-Flora BC Static Map
Distribution of Torreyochloa pallida var. pauciflora
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Species Information

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Perennial, tufted grass from conspicuous rhizomes; stems often somewhat decumbent, 15-140 cm tall.
Sheaths smooth or sometimes very slightly minutely rough, cross-walled; blades flat, usually minutely rough and slightly rough on both surfaces (or only on the upper ones), with 8, rounded, thickened nerves on the upper surfaces, 3-12 (15) mm wide; ligules usually irregular jagged, smooth or only slightly rough above, sharp-pointed, 3-9 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Shallow water, marshes, bogs and wet meadows in the lowland to subalpine zones; frequent throughout BC; N to AK, E to AB and S to SD, NM, AZ and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Torreyochloa pallida var. pauciflora

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) 1 573 1808
Slope Gradient (%) 0 6 60
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
10 312 350
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 6 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: CDF(4), CWH(33), ESSF(5), ICH(7), MS(2), SBPS(2)

Synonyms and Alternate Names

Torreyochloa pauciflora (J. Presl) Church

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References