C. albida
C. annamica
C. crispatula var. balansae
C. ciliata var. ciliata
C. crispatula var. crispatula
C. cruddasiana
C. crispatula var. decus-mekongensis
C. crispatula var. flaccidifolia
C. crispatula var. flaccidifolia has long, mostly undulated leaves. When emerged they don't stand upright.
C. ciliata var. latifolia
C. loeiensis
C. mekongensis
C. crispatula var. planifolia
C. crispatula var. tonkinensis
C. crispatula var. flaccidifolia with long, stiff, narrow leaves, the China form reddish, with an undulated margin, in Northern Vietnam with more greenish smooth leaves.
C. vietnamensis