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

Bromus ciliatus L.
fringed brome
Poaceae (Grass family)

Introduction to Vascular Plants

© Percy Folkard  Email the photographer   (Photo ID #32574)

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Distribution of Bromus ciliatus
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Species Information

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Perennial grass from fibrous roots; stems usually hairy at the nodes but sometimes smooth, 50-100 cm tall.
Sheaths usually open for 1-2 cm, smooth (or the throats fringed with long, fine hairs) to thickly soft-hairy; blades 5-10 (15) mm wide, lax, flat, smooth to soft-hairy on the upper surfaces and sometimes the lower ones; ear-shaped lobes lacking at the leaf-bases; ligules minutely jagged and fringed with fine hairs, 0.5-1 (1.5) mm long.
Bromus ciliatus is a variable species with some plants having either shorter anthers or differences in hairiness. The phase, B. richardsonii, recognized by Welsh (1974) and Pavlick (1995) has so many overlapping characters with B. ciliatus that its recognition appears meaningless, even at a subspecific level. I have followed the treatments by Hitchcock and Chase (1951), Hitchcock (1969), Holmgren and Holmgren (1977) and Wilken and Painter (1993) which submerge B. richardsonii within B. ciliatus.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Summer
Source:  The USDA

Habitat / Range

Wet streambanks and lake margins to mesic meadows and open forests in the montane zone; frequent in BC in and E of the Coast-Cascade Mountains; N to AK, YT and NT, E to NF and S to ME, MA, PA, NC, NE, TX, NM, AZ and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Bromus ciliatus

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) 8 1140 1950
Slope Gradient (%) 0 18 90
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 179 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 4 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: BG(1), BWBS(26), CWH(4), ESSF(92), ICH(73), IDF(51), MS(83), PP(2), SBPS(15), SBS(103), SWB(2)


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 montane boreal & cool temperate.

Taxonomic and Nomenclatural Links

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General References