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

Mulgedium pulchellum subsp. pulchella (Pursh) G.Don (Pursh) Stebbins
blue lettuce
Asteraceae (Aster family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #29992)

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Distribution of Mulgedium pulchellum
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Species Information

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Perennial herb from extensive rhizomes; stems erect, branched above, solitary, glabrous or glaucous, 0.2-1.2 m tall.
Basal leaves lacking; stem leaves alternate, linear to lanceolate or oblong, the lower ones 5-14 cm long, 6-35 mm wide, entire or more or less pinnately cut, rarely sharply toothed, stalked, the upper ones reduced, becoming entire, unstalked to somewhat clasping.
Heads with strap-shaped flowers, several to numerous in an elongate to rounded inflorescence; involucres 15-20 mm tall; involucral bracts narrowly egg-shaped, graduated, the outer shorter, often purplish; ray flowers blue or sometimes violet to blue, 18-50.
Achenes oblong-lanceolate, short-beaked, the beak equaling or less than 1/2 the length of the body, compressed, several-nerved on each face, glabrous, 6-7 mm long including the prominent beak, pale brown; pappus white.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to mesic meadows and shrublands in the steppe and montane zones; frequent throughout all but NW and SW BC; N to AK, YT and NT, E to ON, MN and MO and S to OR and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Mulgedium pulchellum

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) 365 754 970
Slope Gradient (%) 0 18 70
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
38 101 315
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 4 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: BG(2), IDF(5), PP(2), SBS(2)


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.

Synonyms and Alternate Names

Lactuca tatarica subsp. pulchella (L.) C.A. Mey.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References