Mycelis muralis (L.) Dumort.
wall lettuce
Asteraceae (Aster family)
Introduction to Vascular Plants
wall lettuce
Asteraceae (Aster family)
Introduction to Vascular Plants
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.
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.
Illustration Source: The Illustrated Flora of British Columbia
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)
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) |
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) | ||
|
Source:
Klinkenberg 2013
|
|||
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.Status Information
Synonyms
Synonyms and Alternate Names:
Lactuca muralis (L.) Fresen.