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

Digitaria sanguinalis (L.) Scop.
hairy crabgrass
Poaceae (Grass family)

Introduction to Vascular Plants

© Robert Flogaus-Faust  Email the photographer   (Photo ID #64096)

E-Flora BC Static Map
Distribution of Digitaria sanguinalis
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Species Information

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Annual, freely branching grass from fibrous roots, also rooting at the nodes, forming patches often over 1 m wide; stems hollow, often prostrate to ascending, 20-60 cm long/tall.
Sheaths and collars strongly stiff-hairy, the hairs minutely blistery at the bases, often 2-3 (5) mm long; blades 4-6 (10) mm wide, flat, at least stiff-hairy towards the base, usually rough on the lower surface, the free margins narrowed gradually and ultimately turning upward on the ligules as slight ridges; ligules 1.5-2 mm long, membranous, blunt, the margins irregularly jagged.
Inflorescence of several, fingerlike, linear racemes in 1 or 2 whorls, 5-12 cm long, the spikelets mostly paired and in 2 rows on 1 side of flattened and 3-angled rachises; spikelets 2-flowered, but the lower flowers sterile, 1 spikelet short-stalked, the other nearly unstalked; glumes fringed with short hairs, the lower glumes about 0.5 mm long, the upper glumes about 2 mm long; sterile lemmas equalling the fertile lemmas, about 3 mm long, appressed-hairy, the lateral nerves prominent; lemmas pale greenish-brown.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry lawns, fields, roadsides and waste areas in the lowland, steppe and montane zones; infrequent in SW and SC BC; introduced from Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Digitaria sanguinalis

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) 1890 1890 1890
Slope Gradient (%) 31 31 31
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
331 331 331
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 2 2
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)


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

Panicum sanguinale L.
Syntherisma sanguinalis (L.) Dulac

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References