Derivation of name uncertain.
Annual herbs, glabrous. Stems erect, simple or little-branched. Leaves along stems, alternate, margins divided. Capitula radiate, terminal, solitary or in loose corymbs, with stalks. Involucral bracts in several rows, overlapping, unequal, wide. Receptacle convex to conical. Ray florets female, ligulate, yellow, basally reddish or white. Disk florets bisexual, tubular, red to purple. Achenes of 2 types, outer 3-angled and winged, inner compressed and winged. Pappus absent.
Yellow ray florets with a reddish or whitish base; red or purplish disk florets.
1 species from Morocco.
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.