The flowerhead of Curio radicans, a member of the Asteraceae family, has disc flowers only. The flowerheads grow solitary on long, erect, purplish peduncles. The robust purplish bracts and green receptacle below the white cluster of disc florets can be seen in the picture. Flowers are said to be cinnamon-scented. Flowering lasts from autumn to spring (Vlok and Schutte-Vlok, 2010; Wikipedia).