Grindelia stricta DC.
Oregon gumweed (entire-leaved gumweed; Puget Sound gumweed)
Asteraceae (Aster family)
Introduction to Vascular Plants
Oregon gumweed (entire-leaved gumweed; Puget Sound gumweed)
Asteraceae (Aster family)
Introduction to Vascular Plants
Photograph
© Dave Ingram (Photo ID #5409)
Species Information
General:
Perennial herb from a taproot and a stout branched stem-base; stems erect or ascending, several, usually branched, nearly glabrous or with long, soft hairs, 15-80 cm tall.
Leaves:
Basal leaves alternate, toothed or entire, lower ones oblanceolate, up to 40 cm long and 4 cm wide; stem leaves unstalked, sometimes clasping.
Flowers:
Inflorescence of solitary heads or a flat-topped cluster of heads; disk 1-3 cm wide; yellow rays 10-35 or more; involucral bracts slightly or moderately sticky, outer ones long slender, green-tipped, loose or spreading but not regularly reflexed.
Fruits:
Achenes compressed, scarcely nerved; pappus of 2-several deciduous, firm bristles.
Notes:
This is a highly variable species which has received various treatments. Douglas (1995) concluded that it was best to recognize only one environmentally variable species.
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 Grindelia stricta
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) |
1 | 0 | 2 |
| Slope
Gradient (%) |
0 | 0 | 0 |
|
Aspect (degrees) |
245 | 245 | 245 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
5 | 4 | 8 |
| Modal
Nutrient Regime
Class |
D | ||
| #
of field plots species was recorded in: |
10 | ||
| Modal
BEC Zone Class |
CDF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
CDF(7), CWH(3) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Mesic to dry beaches, coastal bluffs, waste places and roadsides in the lowland zone; common in coastal BC; S to N CA.Status Information
Synonyms
Synonyms and Alternate Names:
Grindelia integrifolia DC.
Grindelia integrifolia var. macrophylla
Grindelia macrophylla