Robust perennial to over 2 m tall. Basal leaves to 50 cm or more wide, cordate, lobed, rough-hairy and ruggedly toothed. Flowers in large terminal clusters, individual flowers about 1 cm wide.
C. maritima L., Sea Kale from Eurasia, a low-growing coastal species with waxy blue fleshy leaves, is grown, mostly in herb gardens, for the succulent edible blanched new spring shoots.
Source: (1997). Brassicaceae. In: . Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.