1.	Limb rarely exceeding 2.5 cm in length, more or less recurved (to spirally twisted, with a short appendage). Opening of the limb usually distinctly dilatated. Markings on the limb irregular, line-like to spotted, brownish (to reddish). Leaves green to brown, 10-30 cm long, smooth, neither undulate nor denticulate at the margin.	C. albida
1.	Limb usually more than 3 cm long, more or less regularly spirally twisted. Opening of the limb of the spathe usually not broadly dilatated. Markings on the limb more or less regular, line-like and purple or larger red spots. Leaves 10-70 cm long, smooth to undulate to bullate or with denticulate margins	2
2.	Limb more or less open-spirally twisted, sometimes uncoiled. Markings on the limb irregular, line-like (to circular), purple. Leaves green to brown, smooth to undulate to bullate or with a denticulate margin, 10-70 cm long	C. crispatula
2.	Limb of the spathe usually more or less spirally twisted. Markings on the limb larger, more or less circular, reddish. Leaves green to brownish, smooth to somewhat undulate, 10-40 cm long	C. retrospiralis