Perennial herb or shrub to 2 m tall, hairy. Stems much-branched. Leaves more or less round, to 20 cm long, to 20 cm wide, margins palmately lobed, densely hairy below. Capitula radiate, in corymbose panicles, to 2.5 cm across, on short stalks; mostly spring. Ray florets yellow. Disk florets yellow. Achenes 2.5-4 mm long, yellowish, glabrous. [Senecio petasitis (Sims) DC.]

Mexico

Source: Lawson, L.; Spencer, R. (2002). Dahlia. In: Spencer, R.. 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.