Arnica latifolia Bong.
mountain arnica (broadleaf arnica)
Asteraceae (Aster family)
Introduction to Vascular Plants
mountain arnica (broadleaf arnica)
Asteraceae (Aster family)
Introduction to Vascular Plants
Species Information
General:
Perennial herb from a horizontal underground stem; stems erect, solitary or occasionally a few clustered together, sparsely hairy, 20-60 cm tall.
Leaves:
Basal leaves smaller than the stem leaves and often deciduous by flowering time, often produced on separate short shoots; stem leaves opposite, 2-4 (sometimes 5) pairs, egg-shaped to lanceolate, 6-14 cm long, 1.5-8.0 cm wide, often becoming narrower and smaller above, thinly hairy and usually sparsely to densely glandular, stalked below, unstalked above, usually coarsely toothed.
Flowers:
Heads with ray and disk flowers, 1-3, the bases sparsely to moderately hairy with long white or yellow hairs, often glandular; involucres 8-18 mm tall; involucral bracts lanceolate to oblanceolate, sparsely to densely hairy, often glandular, the tips fringed; ray flowers yellow, 8-12, with conspicuous teeth; disk flowers yellow.
Fruits:
Achenes 4-8 mm long, usually glabrous below and sparsely hairy above or glabrous throughout; pappus white, finely-barbed.
Notes:
Hybridizes with A. cordifolia, numerous intermediates may be encountered.
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
USDA Species Characteristics
Flower Colour:
Yellow
Blooming Period:
Early Summer
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source: The USDA
Ecology
Ecological Framework for Arnica latifolia
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) |
1696 | 5 | 2555 |
| Slope
Gradient (%) |
25 | 0 | 300 |
|
Aspect (degrees) |
260 | 0 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 0 | 8 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
4089 | ||
| Modal
BEC Zone Class |
ESSF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
AT(95), BAFA(44), BG(1), BWBS(42), CMA(23), CWH(14), ESSF(3029), ICH(107), IDF(36), IMA(50), MH(65), MS(141), PP(1), SBPS(3), SBS(67), SWB(23) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Mesic to dry forests, meadows and rocky slopes in the lowland to alpine zones; common throughout BC; E to AB and S to WY and WA.Status Information
Synonyms
Synonyms and Alternate Names:
Arnica latifolia var. angustifolia Herder