E-Flora BC: Electronic Atlas of the Flora of British Columbia

Hieracium umbellatum L.
Umbellate Hawkweed (narrowleaf hawkweed; narrow-leaved hawkweed)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Paul Handford  Email the photographer   (Photo ID #88255)

E-Flora BC Static Map
Distribution of Hieracium umbellatum
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

SUBTAXA PRESENT IN BC
Hieracium umbellatum ssp. umbellatum

Species Information

Click on the image below to view an expanded illustration for this species.



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).

Source: The Illustrated Flora of British Columbia

Habitat / 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.

Source: The Illustrated Flora of British Columbia

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)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 162 1025 2205
Slope Gradient (%) 0 20 95
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 200 358
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 3 8
Modal Nutrient Regime
Class
C
Number 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)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

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

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References