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

Agoseris grandiflora var. leptophylla G.I. Baird
large-flowered agoseris
Asteraceae (Aster family)

Introduction to Vascular Plants
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Distribution of Agoseris grandiflora var. leptophylla
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Species Information

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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

Source: The Illustrated Flora of British Columbia

Habitat / 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.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Agoseris grandiflora var. leptophylla

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) 120 389 915
Slope Gradient (%) 4 48 100
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W] 		45 199 270
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric] 		1 1 2
Modal Nutrient Regime
Class		 C
Number 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)

Taxonomic and Nomenclatural Links

Flora North America treatment for Asteraceae
 Flora North America treatment for Agoseris grandiflora
Genetic information (NCBI Taxonomy Database)
 International Plant Names Index
 Taxonomic Information from the World Flora Online
 Integrated Taxonomic Information System

Additional Photo Sources

Images From CalPhoto
UT Austin's Native Plant Database
 Google Image Search
 Flickr Image Search

General References

Google Scholar Search
Family References
 General Botanical References for BC
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2026-10-17 4:48:01 AM ]
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