Stephanomeria tenuifolia (Raf.) H.M. Hall
narrow-leaved stephanomeria (wire lettuce)
Asteraceae (Aster family)
Introduction to Vascular Plants
narrow-leaved stephanomeria (wire lettuce)
Asteraceae (Aster family)
Introduction to Vascular Plants
Species Information
General:
Perennial herb from a stout taproot and branching, woody stem-base or deep-seated, stout, creeping roots; stems much branched throughout, glabrous, exuding milky juice when broken, 10-70 cm tall.
Leaves:
Basal leaves lacking; stem leaves alternate, linear to threadlike, entire or sparsely toothed, 1.5-8 cm long, 2-3 mm wide, uppermost reduced and scalelike.
Flowers:
Heads with strap-shaped flowers, numerous, terminating the open branches; involucres 7-11 mm tall; involucral bracts lanceolate with mostly 5 glabrous, principal bracts and several much-reduced outer ones; ray flowers pink or occasionally white, mostly 5.
Fruits:
Achenes, 4-6 mm long, longitudinally ribbed and grooved; pappus of white feathery bristles.
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 Stephanomeria tenuifolia
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) |
655 | 295 | 1800 |
| Slope
Gradient (%) |
38 | 0 | 90 |
|
Aspect (degrees) |
189 | 8 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
1 | 0 | 5 |
| Modal
Nutrient Regime
Class |
B | ||
| #
of field plots species was recorded in: |
83 | ||
| Modal
BEC Zone Class |
BG | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BG(39), ICH(3), IDF(12), PP(27) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Dry grasslands, shrublands and open forests in the steppe and lower montane zones; frequent in SC BC; E to MT and S to CA and TX.Status Information
Synonyms
Synonyms and Alternate Names:
Lygodesmia tenuifolia (Raf.) Shinners
Stephanomeria minor var. uintensis (Goodrich & S.L. Welsh) Kartesz
Stephanomeria tenuifolia var. uintaensis Goodrich & S.L. Welsh
Stephanomeria tenuifolia var. uintensis Goodrich & S.L. Welsh