Crispatula key

Key for the 'crispatula group' according to Jacobsen (1991).
See the full article at the Documents pages

1.	Limb rarely exceeding 2.5 cm, more or less recurved (to spirally twisted, with a short appendage). Opening of the limb of the spathe usually distinctly dilatated. Markings on the limb irregular, line-like to circular, 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, more or less regularly spirally twisted. Opening of the limb of the spathe usually not dilatated. Markings on the limb more or less circular, large red spots, or, more or less regular line-like and purple. Leaves 10 -70 cm long, smooth to undulate to bullate or with a denticulate margin ....................................................................................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, 10 - 70 cm long ........................................ C. crispatula
2.	Limb of the spathe usually more or less spirally twisted. Markings on the limb large, more or less circular, reddish. Leaves green to brownish, smooth to undulate, 10 - 40 cm long ................................... C. retrospiralis

1.	Leaves bullate or undulate ........................................................... 2
1.	Leaves smooth ............................................................................ 4
2.	Leaves 1 - 4 cm wide, bullate ..................................... var. balansae
2.	Leaves narrower, 0,2 - 1,2 cm wide, undulated ............................ 3
3.	Leaves 0,2 - 0,4 cm wide........................................ var. tonkinensis
3.	Leaves 0,4 - 1,2 cm wide ....................................... var. flaccidifolia
4.	Leaves rather stiff, 10 - 15 (-20) cm long, 0,8 - 1,5 cm wide ........................................................ var. sinensis
4.	Leaves longer and / or narrower ................................................... 5
5.	Leaves very narrow, 0,2 - 0,4 cm wide, 20 (-30) cm long, very soft .................................................... var. tonkinensis
5.	Leaves 0,4 - 1,6 cm wide, 15 - 50 long, rather stiff or soft .......................................................................... 6
6.	Leaves rather stiff, 15 - 40 cm long, edge smooth or fine denticulate ......................................................... var. crispatula
6.	Leaves soft, 20 - 50 cm long, edge smooth or slight undulated ................................................................. var. flaccidifolia