Hieracium umbellatum L.
Umbellate Hawkweed (narrowleaf hawkweed; narrow-leaved hawkweed)
Asteraceae (Aster family)
Introduction to Vascular Plants
Umbellate Hawkweed (narrowleaf hawkweed; narrow-leaved hawkweed)
Asteraceae (Aster family)
Introduction to Vascular Plants
SUBTAXA PRESENT IN BC
Hieracium umbellatum ssp. umbellatum
Species Information
General:
Perennial herb from a short, stout rhizome; stems erect, branched above, solitary or several, glabrous or nearly glabrous below, with starlike hairs above and often with some short, stout, subconic hairs in the inflorescence, rarely with long, spreading hairs, exuding milky juice when broken, 0.4-1.2 cm tall.
Leaves:
Basal and lower stem leaves small, soon deciduous at flowering time; middle stem leaves lanceolate to narrowly oblong, unstalked, often narrowed to the base, 6-10 cm long, 1-2 cm wide, entire to somewhat toothed, with starlike hairs and subconic, more or less rough, stiff hairs on the margins and veins above; upper leaves reduced.
Fruits:
Achenes nerved, 3-3.5 mm long; pappus tawny.
Notes:
Of the two subspecies recognized within Hieracium umbellatum, only the spp. umbellatum occurs in our range. The ssp. canadense (Michx.) Guppy (H. canadense Michx.) occurs east of the Rocky Mountains (Guppy 1978).
Ecology
Ecological Framework for Hieracium umbellatum
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) |
1025 | 162 | 2205 |
| Slope
Gradient (%) |
20 | 0 | 95 |
|
Aspect (degrees) |
200 | 0 | 358 |
| 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: |
456 | ||
| Modal
BEC Zone Class |
SBS | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BAFA(9), BG(5), BWBS(15), CWH(10), ESSF(46), ICH(44), IDF(88), MS(27), PP(6), SBPS(35), SBS(153), SWB(9) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Moist to dry meadows, streambanks, grasslands, shrublands and forests in the lowland, steppe and montane zones; common throughout most of BC; circumpolar, N to AK, YT and NT, E to NB and S to NJ, MI, NE, ND, CO, ID and OR; Eurasia.Status Information
Synonyms
Synonyms and Alternate Names:
Hieracium columbianum Rydb.
Hieracium scabriusculum Schwein.
Hieracium scabriusculum var. columbianum (Rydb.) Lepage
Hieracium scabriusculum var. perhirsutum Lepage
Hieracium scabriusculum var. saximontanum Lepage
Hieracium scabriusculum var. scabrum (Schwein.) Lepage