Perennial herb to 50 cm tall, rhizomatous, glandular-hairy. Stems many, erect or ascending, branched from base. Leaves oblong to oblanceolate, to 15 cm long, to 2 cm wide, margins entire to sparsely toothed, decreasing in size up the stem. Capitula solitary, to 4 cm across; all year. Ray florets reddish above and below. Disk florets yellow, blackish at apex. Achenes about 5 mm long, 3-angled. [Dimorphotheca jucunda E. Philips]
O. barberiae (Harv.) Norl. from South Africa is a rhizomatous perennial herb with narrow, sparsely toothed leaves, solitary terminal capitula, and ray florets that are reddish on the upper surface and light orange-brown on the lower surface. [Dimorphotheca barberiae Harv.]
Source: (2002). Dahlia. In: . Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.