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

Cotula coronopifolia L.
brass buttons (common brassbuttons)
Asteraceae (Aster family)

Introduction to Vascular Plants

© Val George  Email the photographer   (Photo ID #29672)

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Distribution of Cotula coronopifolia
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Species Information

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Perennial, somewhat succulent herb from a fibrous root; stems decumbent or spreading, branching from the base, glabrous, rooting from nodes, 5-30 cm tall.
Basal leaves linear to lanceolate or oblong, entire or with a few coarse teeth, 1-6 cm long, 1-10 mm wide; stem leaves similar to the basal, becoming reduced upwards, unstalked with a sheathing, somewhat papery base.
Heads disciform, solitary on the ends of branches, the disk about 5-11 mm wide; involucres 2-3 mm tall; involucral bracts elliptic or oblong, glabrous, in 3 subequal series; marginal flowers in a single series, corolla lacking; disk flowers bright yellow; receptacles with achene stipes persistent.
Achenes of the marginal flowers conspicuously winged, stalked; pappus lacking.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet tidal flats and marshes in the lowland zone; infrequent on the north coast and islands, common in SW BC, known from SE Vancouver Island and the adjacent mainland; introduced from South Africa.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Cotula coronopifolia

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) 485 485 485
Slope Gradient (%) 0 0 0
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
7 7 7
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: BWBS(1)


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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References