After blooming, when even the seeds have been dispersed, the desiccated, beige flowerhead involucres of Senecio sarcoides may remain in long-stalked clusters upon the plant as in the photo, taken in August at Goegap. These well-opened, bell-shaped involucres have straight bracts angling out, their tips curving out markedly.
Earlier, many yellow flowerheads were borne in stem-tip clusters on long, hairless pedicels, their involucres cohering in a cylindrical shape. The narrow, green involucre is made up of one row of cohering bracts, 1 cm long. Some free, short, leaf-like bracts may be seen below the involucre base.
A flowerhead comprises one sparse whorl of yellow ray florets around a yellow disc. Flowerhead diameter is about 1 cm. Flowering happens from about midwinter to midspring (Manning, 2009; Le Roux, et al, 2005; Manning and Goldblatt, 1996; iNaturalist).