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

Pilosella caespitosa (Dumort.) P.D.Sell & C.West
yellow king devil
Asteraceae (Aster family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #9998)

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Distribution of Pilosella caespitosa
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Species Information

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Perennial herb from a short, stout rhizome and long, leafy stolons; stems erect, solitary, with non-glandular, glandular and starlike hairs, exuding milky juice when broken, 25-90 cm tall.
Basal leaves well-developed, persistent, oblanceolate to spoon-shaped, entire or minutely toothed, stalked, with non-glandular hairs and sometimes starlike hairs below, 5-25 cm long, 1-3 cm wide; stem leaves 1-3, reduced upwards.
Heads with strap-shaped flowers, dense, few to many; involucres 5-9 mm tall; involucral bracts lanceolate, not graduated, with many non-glandular and glandular and a few starlike hairs; ray flowers yellow.
Achenes 1.5-2 mm long; pappus dirty white.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry roadsides, disturbed areas and waste places in the lowland zone; infrequent in SC BC, known from the lower Fraser River valley; introduced from Europe.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Pilosella caespitosa

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) 722 793 866
Slope Gradient (%) 0 16 60
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
110 97 310
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 3 6
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: ICH(1), SBS(3)

Synonyms and Alternate Names

Hieracium pratense Tausch
Hieracium caespitosum Dumort.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References