Agoseris grandiflora (Nutt.) Greene
large-flowered agoseris (bigflower agoseris)
Asteraceae (Aster family)
Introduction to Vascular Plants
large-flowered agoseris (bigflower agoseris)
Asteraceae (Aster family)
Introduction to Vascular Plants
SUBTAXA PRESENT IN BC
Agoseris grandiflora var. leptophylla
Species Information
General:
Perennial from a branched base; stems leafless, exuding milky juice when broken, 20-70 cm tall.
Leaves:
All basal, oblanceolate to lance-elliptic or broadly linear, entire to deeply pinnately cut with broad or narrow lobes which are widely spreading or pointed towards the base, 10-25 cm long, 1-3 cm wide.
Flowers:
Heads with strap-shaped flowers, solitary, large; involucres broadly bell-shaped to rounded, 1.5-4 cm tall; involucral bracts in 4-5 series, the outer relatively broad and short, conspicuously fringed with small hairs; receptacles naked; flowers yellow, often turning pinkish or purplish upon drying.
Fruits:
Achenes smooth, spindle-shaped, the body about 4-7 mm long, tapering to a smooth, slender beak 2-4 times as long as the body; pappus of numerous hairlike bristles, 8-14 mm long, white. vol1_3
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
USDA Species Characteristics
Flower Colour:
Yellow
Blooming Period:
Spring
Fruit/Seed characteristics:
Colour: Brown
Present over the Summer
Source: The USDA
Ecology
Ecological Framework for Agoseris grandiflora
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) |
389 | 120 | 915 |
| Slope
Gradient (%) |
48 | 4 | 100 |
|
Aspect (degrees) |
199 | 45 | 270 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
1 | 1 | 2 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
25 | ||
| Modal
BEC Zone Class |
CDF | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
CDF(6), CWH(3), ICH(1), IDF(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Mesic to dry grassy slopes, meadows and forest openings from the lowland to the lower montane zones; infrequent in extreme S BC; S to UT, NV and CA.Status Information
Synonyms
Synonyms and Alternate Names:
Agoseris grandiflora var. leptophylla G.I. Baird
Agoseris laciniata (Nutt.) Greene
Agoseris plebeja (Greene) Greene
Troximon grandiflorum Nutt.