Mycelis muralis (L.) Dumort.
wall lettuce
Asteraceae (Aster family)

Introduction to Vascular Plants

Photograph

© Brian Klinkenberg     (Photo ID #20414)


Map

E-Flora BC Static Map

Distribution of Mycelis muralis
Click here to view the full interactive map and legend

Species Information

General:
Annual or biennial herb from a fibrous root; stems erect, branched above, solitary or more usually several, glabrous, often glaucous, exuding milky juice when broken, 30-90 cm tall.
Leaves:
Basal leaves lacking; stem leaves alternate; basal and lower leaves 6-18 cm long, 3-8 cm wide, pinnately cut with a broad, ivylike terminal segment, the bases with earlike and clasping flanges, glabrous, middle and upper leaves few and reduced.
Flowers:
Heads with strap-shaped flowers, numerous in a rounded inflorescence; involucres 9-11 mm tall; involucral bracts in 2 series, the outer lanceolate, the inner much reduced, linear, glabrous or nearly so; ray flowers yellow, 5.
Fruits:
Achenes several-nerved, approximately 4 mm long including the 1 mm long beak; pappus white.

SourceThe Illustrated Flora of British Columbia

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.

Ecology

Ecological Framework for Mycelis muralis

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)
304 0 1195
Slope Gradient (%)
19 0 130

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

235 0 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 0 8
Modal Nutrient Regime
Class
D
# of field plots
 species was recorded in:
1025
Modal BEC Zone Class
CWH

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

CDF(132), CWH(712), ICH(15), IDF(41), MH(6), PP(1), SBS(1)

Habitat and Range

Moist to mesic forests in the lowland and montane zones; common in S BC, also in Queen Charlotte Islands; introduced from Europe.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Lactuca muralis (L.) Fresen.