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

Dactylis glomerata L.
orchard-grass (orchard grass; orchardgrass)
Poaceae (Grass family)

Introduction to Vascular Plants

© Adolf Ceska  Email the photographer   (Photo ID #13410)

E-Flora BC Static Map
Distribution of Dactylis glomerata
Click here to view the full interactive map and legend
Details about map content are available here
New! Click on the map dots to view record details.

Species Information

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



General:
Perennial, strongly tufted grass from fibrous roots; stems hollow, erect, up to 150 cm tall.
Leaves:
Sheaths closed, more or less compressed, smooth to slightly rough; blades (2) 3-11 mm wide, flat, mostly somewhat rough, usually the 2 margins freed from the sheaths at different levels; ligules mostly 3-9 mm long, membranous, generally sparsely hairy, blunt to pointed, the margins finely jagged, fringed with small hairs, the upper halves usually turned back and split in several places.
Flowers:
Inflorescence a panicle 3-15 cm long, the branches stiffly ascending to spreading or even reflexed (the lower ones); spikelets strongly to one side in dense clusters, compressed, 3- to 5-flowered, 5-9 mm long, nearly unstalked, articulating above the glumes; glumes 4-6 mm long, keeled, the keels fringed with stiff hairs, usually 2 (3)-nerved, the tips short, soft and awnlike, the lower glumes lopsided, the upper narrower and usually 1-nerved; lemmas 5-8 mm long, keeled, the keels fringed with hairs above, awned, the awns about 1 mm long; paleas nearly equal to the lemmas, long-pointed, nerved, the nerves fringed with short hairs; lodicules short, membranous, scarcely 0.5 mm long; anthers about 4 mm long.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

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

Habitat / Range

Mesic meadows, Garry oak woodlands, pastures, roadsides and disturbed sites in the lowland, steppe and montane zones; common in S BC, less frequent in N BC; introduced from Eurasia.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Dactylis glomerata

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

Minimum

Average

Maximum

Elevation (metres) 2 915 2006
Slope Gradient (%) 0 14 84
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 164 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 3 8
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
204
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: BG(2), CDF(10), CWH(15), ESSF(10), ICH(15), IDF(85), MS(37), PP(13), SBPS(2), SBS(6), SWB(1)

Climate

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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References