Senecio integerrimus var. exaltatus Nutt. (Nutt.) Cronquist
western groundsel (Columbia ragwort)
Asteraceae (Aster family)
Introduction to Vascular Plants
western groundsel (Columbia ragwort)
Asteraceae (Aster family)
Introduction to Vascular Plants
Map click to expand contents
Distribution of Senecio integerrimus var. exaltatus
Click here to view the full interactive map and legend
Species Information click to expand contents
General:
Perennial herb from a fibrous-rooted, short, erect woody stem-base; stems erect, solitary, branched above, sparsely to densely woolly-hairy, 20-70 cm tall.
Leaves:
Basal leaves thick, somewhat succulent, narrowly oblanceolate to elliptic or nearly round, stalked, 6-25 cm long including the stalk, 1-6 cm wide, entire or sometimes iregularly toothed, hairy when young becoming less so with age; stem leaves similar, progressively reduced upwards, becoming unstalked.
Flowers:
Heads with ray and disk flowers, several to numerous in a compact inflorescence; involucres 5-10 mm tall; involucral bracts lanceolate, hairless to moderately long-hairy, usually conspicuously black-tipped; bracteoles few, black-tipped; ray flowers yellow, rarely white or creamy; disk flowers yellow.
Fruits:
Achenes oblong, ribbed, glabrous or coarse-hairy; pappus of white hairlike bristles.
Notes:
Two poorly-defined varieties occur in BC. The var. ochroleucus has not been collected in BC since 1897.
1. Ray flowers white.............. var. ochroleucus (A. Gray) Cronq.
1. Ray flowers yellow................... var. exaltatus (Nutt.) Cronq.
Illustration click to expand contents
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 click to expand contents
Ecological Framework for Senecio integerrimus var. exaltatus
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) |
1120 | 634 | 1536 |
| Slope
Gradient (%) |
29 | 20 | 40 |
|
Aspect (degrees) |
103 | 36 | 237 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
2 | 2 | 3 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
4 | ||
| Modal
BEC Zone Class |
IDF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
ICH(1), IDF(2), PP(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range click to expand contents
Moist to dry grasslands, shrublands, forest openings and meadows in the steppe to lower subalpine zones; var. integerrimus common in S BC in and E of the Coast-Cascade Mountains, var. ochroleucus rare in SC and SE BC; E to SK and MN and S to CA.
Synonyms click to expand contents
Synonyms and Alternate Names:
Senecio columbianus Greene
Senecio exaltatus Nutt.
Senecio hookeri Torr. & A. Gray
Senecio integerrimus var. vaseyi (Greenm.) Cronq.
Senecio lugens var. exaltatus (Nutt.) Gray
Senecio vaseyi Greenm.