The flowers of Lampranthus haworthii grow from stem-tips, each with five fleshy sepals below the corolla on pedicels of about 3 cm long.
The large, glossy flowers have purple to magenta or almost white petals in about two whorls around the flower centre. The petal bases are white, forming a very small white centre around the filamentous staminodes surrounding the stamens in a central cone. The nectar glands form a toothed ring in the flower base. Flower diameter is about 5 cm.
Flowering happens from late in winter to after midspring, in some parts slightly earlier or rain affected. The flowers are fully open in the hotter, middle part of the day. Bees are important in the pollination.
The woody fruit capsule is funnel-shaped at its base (Vlok and Schutte-Vlok, 2015; Smith, et al, 1998; Bond and Goldblatt, 1984; iNaturalist; http://pza.sanbi.org).