Hieracium gracile Hook.
slender hawkweed
Asteraceae (Aster family)
Introduction to Vascular Plants
slender hawkweed
Asteraceae (Aster family)
Introduction to Vascular Plants
Species Information
General:
Perennial herb from a short, stout rhizome; stems erect, usually solitary, sparsely branched above, glabrous to hairy, the hairs starlike or short soft-hairy and sometimes glandular, especially above, exuding milky juice when broken, 3-35 cm tall.
Leaves:
Basal leaves persistent, tufted, hairless or short-hairy, toothed or entire, narrowly elliptic, 1-10 cm long, 3-15 mm wide; stem leaves few, reduced, bractlike.
Flowers:
Heads with strap-shaped flowers, solitary or several; involucres 6-8 mm tall; involucral bracts linear-lanceolate, subequal, grey-hairy, the hairs starlike, also with some long, soft blackish hairs which may be gland-tipped; ray flowers yellow.
Fruits:
Achenes nerved, 2-3.5 mm long; pappus tawny or sometimes white.
Notes:
Easily confused with H. triste which, upon close examination, lacks glandular hairs on the stalks of the heads and involucres.
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 Hieracium gracile
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) |
1813 | 22 | 3000 |
| Slope
Gradient (%) |
25 | 0 | 250 |
|
Aspect (degrees) |
189 | 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: |
1104 | ||
| Modal
BEC Zone Class |
ESSF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
AT(80), BAFA(56), BWBS(1), CMA(29), ESSF(648), ICH(28), IDF(20), IMA(68), MH(34), MS(22), SBPS(1), SBS(45), SWB(13) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Moist to mesic forests, meadows, streambanks and snowbeds in the upper montane to alpine zones; common throughout BC; N to AK, YT and NT and S to N CA and NM.Status Information
Synonyms
Synonyms and Alternate Names:
Hieracium triste var. gracile