Crepis tectorum L.
annual hawksbeard (narrowleaf hawksbeard)
Asteraceae (Aster family)

Introduction to Vascular Plants


© Paul Handford     (Photo ID #65309)


E-Flora BC Static Map

Distribution of Crepis tectorum
Click here to view the full interactive map and legend

Species Information

Annual herb from a short taproot; stems erect, solitary, branched, glabrous or hairy, 0.3-1.0 m tall.
Basal leaves lanceolate or oblanceolate, 2-15 cm long, 0.3-4 cm wide entire to toothed or pinnately parted, abruptly sharp-pointed, short stalked, glabrous or short-hairy, often soon deciduous; stem leaves unstalked, clasping, mostly linear or nearly so, often involute.
Heads with strap-shaped flowers several to numerous, in a flat-topped inflorescence; involucres 6-9 mm tall, cylindric to bell-shaped; involucral bracts short woolly-hairy and sometimes stiff glandular-hairy, the outer ones about 12, awl-like, about a third as long as the 12-15 inner ones, these lanceolate, with long-pointed tips, becoming keeled and thickened near the base, appressed- or short-hairy within; receptacles very finely-fringed with small hairs; ray flowers yellow, up to 13 mm long.
Achenes purplish-brown, 2.5-4.5 mm long, spindle-shaped, rather strongly tapering to a slender tip, scarcely beaked, 10-ribbed, ribs rough short-hairy; pappus white, of fine, hairlike bristles, deciduous.

SourceThe Illustrated Flora of British Columbia


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.


Ecological Framework for Crepis tectorum

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)
837 350 1587
Slope Gradient (%)
20 0 95

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

48 4 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 0 6
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

BG(22), BWBS(2), ICH(2), IDF(40), MS(2), PP(5), SBS(3)

Habitat and Range

Roadsides and disturbed areas in the lowland, steppe and montane zones; frequent throughout BC, except NW BC and the Queen Charlotte Islands; introduced from Europe.

SourceThe Illustrated Flora of British Columbia