The sessile leaves of Leucospermum heterophyllum are more scattered up the stems than alternating or spiralling.

The ascending leaf is oblanceolate to somewhat oblong in shape, tapering gradually to the base, also tapering more or less to the tip where one to three orange to red glandular teeth are present in an acute point or angular formation, sometimes down-turned. The blades are pale to dark green with fine, short, whitish hairs only when they are young. The pale leaf midrib is sometimes partly visible. The leaves become 2,5 cm long and 4 mm wide.

The fragrant, rounded flowerheads grow stalked, solitary or in small clusters at stem-tips, each about 2,5 cm in diameter. The involucre at the flowerhead base consists of overlapping oval bracts, cartilaginous and softly hairy with recurved, pointed tips ending in hairy tufts.

Individual perianths or florets also have bracts at the base. The four perianth segments are felted and narrow, curving away strongly when opening and showing their white insides that turn carmine red as they age. The straight style of the open floret is about 2 cm long, pale yellow in its upper part, also fading to carmine. The yellow pollen presenter is ovate to cone-shaped, grooved at its tip.

Flowering happens from late winter to after midsummer (Mustart, et al, 1997; Bond and Goldblatt, 1984; iNaturalist; Wikipedia).