Hieracium albiflorum Hook.
white hawkweed
Asteraceae (Aster family)

Introduction to Vascular Plants


© Val George     (Photo ID #86555)


E-Flora BC Static Map

Distribution of Hieracium albiflorum
Click here to view the full interactive map and legend

Species Information

Perennial herb from a woody root and often an unbranched, short stem-base; stems erect, usually solitary, branched above, loosely bristly-hairy at least at the base, becoming glabrous upwards, exuding a milky juice when broken, 0.3-1.2 m tall.
Basal leaves oblanceolate, narrowed to a stalk, 4-25 cm long, 1.2-4.5 cm wide, sparsely or moderately bristly-hairy or the upper nearly glabrous, entire or wavy-toothed, persistent and often tufted; stem leaves lacking, or if present few, unstalked and reduced.
Heads with strap-shaped flowers, several or many on slender stalks in a round- to flat-topped inflorescence; involucres 6-11 mm tall; involucral bracts linear-lanceolate, scarcely graduated, greenish or blackish, glabrous or often sparsely glandular with pale or black hairs, sometimes with a few bristly hairs; ray flowers white.
Achenes narrowed at the base, several-ribbed, 2.5-3 mm long; pappus of many white to brownish bristles.

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.

USDA Species Characteristics

Flower Colour:
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source:  The USDA


Ecological Framework for Hieracium albiflorum

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)
1144 0 2450
Slope Gradient (%)
29 0 240

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

194 0 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 0 8
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

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

AT(2), BG(1), BWBS(14), CDF(22), CWH(78), ESSF(606), ICH(972), IDF(511), IMA(1), MH(3), MS(358), PP(9), SBPS(32), SBS(172), SWB(2)

Habitat and Range

Mesic to dry roadsides, fields, grasslands, shrublands and forests in the lowland, steppe and montane zones; common throughout BC; N to AK, YT and NT, E to SK and S to CO, UT and CA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Chlorocrepis albiflora (Hook.) W.A. Weber
Hieracium helleri Gandog.
Hieracium siskiyouense M. Peck