Apera interrupta (L.) P. Beauv.
interrupted apera (dense silkybent)
Poaceae (Grass family)
Introduction to Vascular Plants
interrupted apera (dense silkybent)
Poaceae (Grass family)
Introduction to Vascular Plants
Species Information
General:
Annual, tufted or not, smooth grass from fibrous roots; stems 1 to several, hollow, mostly 10-40 (60) cm tall.
Leaves:
Sheaths open; blades 1-3 mm wide, flat to folded; ligules 2-3 (5) mm long, the margins strongly jagged, blunt, usually smooth.
Flowers:
Inflorescence a narrow, interrupted panicle, (3) 5-10 (15) cm long, greenish; lower glumes scarcely 2 mm long, about 3/4 the length of the upper ones; lemmas about 2 mm long, awned below the tips, the straight, delicate awns 6-7 mm long; paleas nearly equal to the lemmas; rachillas prolonged as bristles about 0.5 mm long; anthers 0.5 mm long; lodicules about 0.5 mm long.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Ecology
Ecological Framework for Apera interrupta
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)
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 |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
576 | 355 | 770 |
| Slope
Gradient (%) |
17 | 3 | 50 |
|
Aspect (degrees) |
261 | 25 | 270 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 2 | 5 |
| Modal
Nutrient Regime
Class |
E | ||
| #
of field plots species was recorded in: |
4 | ||
| Modal
BEC Zone Class |
PP | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BG(1), ICH(1), PP(2) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Dry waste areas in the lowland, steppe and montane zones; infrequent in S BC; introduced from Europe.Status Information
Synonyms
Synonyms and Alternate Names:
Agrostis interrupta L.