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brass buttons, common brass buttons

Habit Glabrous, somewhat succulent perennial, often trailing or rooting at the nodes, 5-30 cm. tall.
Leaves

Leaves sessile, with a sheathing base, entire or with a few coarse teeth or deep narrow lobes, narrowly oblong or lanceolate to linear, 1-6 cm. long and 1-10 mm. wide, broader when lobed.

Flowers

Heads solitary at the ends of the branches, the disk 5-11 mm. wide; the outer ring of flowers on the disk all pistillate, without a corolla, the other flowers perfect, bright yellow, with a short tubular corolla with 4 teeth;

involucre bracts in two series;

receptacle naked;

pappus none.

Fruits

Achenes of the outer flowers broadly winged, shorter than the conspicuous stipe; others 2-nerved with a short stipe.

Cotula coronopifolia

Asteraceae tribe anthemideae

Flowering time June-September
Habitat Tidal flats.
Distribution
Occurring west of the Cascades crest along the Puget Sound, outer coast, and lower Columbia River shorelines. Alaska to California, east to Nevada and Arizona, also in northeastern North America.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from South Africa
Conservation status Not of concern
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