Agoseris aurantiaca subsp. aurantiaca (Hook.) Greene
orange agoseris
Asteraceae (Aster family)

Introduction to Vascular Plants

Photograph

© Judith Holm     (Photo ID #52388)


Map

E-Flora BC Static Map

Distribution of Agoseris aurantiaca subsp. aurantiaca
Click here to view the full interactive map and legend

Species Information

General:
Perennial herb from a taproot and a simple or branching base; stems leafless, 1-several, exuding milky juice when broken, 10-60 cm tall.
Leaves:
All basal, extremely variable, narrowly linear-lanceolate to broadly oblanceolate, entire to laciniate or few lobed, 5-35 cm long, 1-30 mm wide, rounded to long-pointed, usually glabrate with sparse hairs along the midrib below, margins usually fringed with small hairs toward the base, the stalks purplish.
Flowers:
Heads with strap-shaped flowers, solitary; involucres top-shaped to narrowly bell-shaped; involucral bracts in about 3 series, slightly or not at all graduated, narrow, long-pointed, the outer series fringed with small hairs, usually glabrous or sometimes long-hairy on the surface; receptacles naked; ray flowers burnt orange, rarely yellow, commonly turning deep pink to purple in drying or with age.
Fruits:
Achenes smooth, 5-9 mm long, rather abruptly narrowed to a beak, which varies from about half to slightly longer than the body; pappus of numerous hairlike bristles, 9-14 mm long, silky white or sordid.

SourceThe Illustrated Flora of British Columbia

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.

Ecology

Ecological Framework for Agoseris aurantiaca ssp. aurantiaca

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)
1680 1680 1680
Slope Gradient (%)
70 70 70

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

180 180 180
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 2 2
Modal Nutrient Regime
Class
B
# of field plots
 species was recorded in:
1
Modal BEC Zone Class
ESSF

All BEC Zones (# of stations/zone) species was recorded in

ESSF(1)

Habitat and Range

Mesic to dry open forests and meadows in the upper montane to alpine zones; frequent throughout BC; N to YT and NT; E to PQ and S to NM and CA

SourceThe Illustrated Flora of British Columbia