Cotula sericea flowerhead young and half old

The button-like, yellow flowerheads of Cotula sericea are borne solitary on long, slender, naked flowering stems.

The flowerhead consists only of disc florets, no rays. The florets are tiny, tubular with four-lobed corollas. They are not yet open in the yellow head in picture, withered in the brown one. Some of the inner row of involucral bracts with rounded brown margins are visible, curving in around the outer florets.

Flowering may happen all year round, more in spring and summer (Bond and Goldblatt, 1984; JSTOR; iNaturalist; http://pza.sanbi.org).