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

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

Introduction to Vascular Plants
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E-Flora BC Static Map
Distribution of Agoseris aurantiaca var. aurantiaca
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Species Information

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Perennial herb from a taproot and a simple or branching base; stems leafless, 1-several, exuding milky juice when broken, 10-60 cm tall.
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.
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.
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.

Source: The Illustrated Flora of British Columbia

Habitat / 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

Source: The Illustrated Flora of British Columbia


Ecological Framework for Agoseris aurantiaca var. 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




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
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: ESSF(1)

Taxonomic and Nomenclatural Links

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