Flora of North America species comparison

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Cotula coronopifolia

brass-buttons, buttonweed, common brass-buttons, cotule, golden buttons
Habit Perennials, (3–)5–15(–25+) cm tall or across.
Stems

prostrate (rooting at nodes, ± fleshy) to decumbent or erect, glabrous.
Leaves

sessile (bases sheathing stems);

blades linear to lanceolate or oblong (sometimes lobed, lobes lanceolate to linear), (1–)2–3(–7) cm, ultimate margins entire or irregularly toothed or lobed, faces gland-dotted.
Involucres

6–9(–12+) mm diam.
Ray florets

0 (peripheral pistillate florets 12–40+ in 1 series; corollas 0).
Disc corollas

yellow, 1–1.5 mm.
Phyllaries

21–30+ in 2–3+ series.
Cypselae

outer 1.2–1.8 mm, winged, adaxial faces papillate;

inner 0.7–1 mm, scarcely, if at all, winged, not papillate.
2n

= 20.

Cotula coronopifolia
Phenology Flowering Mar–Dec.
Habitat Saline and freshwater marshes, along streams
Elevation 0–900 m (0–3000 ft)
Distribution
from FNA
AK; AZ; CA; MA; MD; NV; OR; WA; BC; NB; NS; PE; QC; South America; S Africa; Australia; Europe [Presumed introduced; also introduced in Mexico (Baja California)]
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 19, p. 544.
Parent taxa Asteraceae > tribe Anthemideae > Cotula
Sibling taxa
C. australis
Name authority Linnaeus: Sp. Pl. 2: 892. (1753)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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