Citation: L., Sp. Pl. 969 (1753).

Derivation: Greek kallos, beautiful; thrix, trikhos, hair.

Synonymy: Not Applicable

Common name: None

Description: Not Available

Biology: Not Applicable

Taxonomic notes: The only genus, with characters as for the family. Mature fruits are essential for accurate identification.

Key to Species:

1. Fruit broader than long, less than 1 mm long	C. sonderi 2.
1. Fruit round or longer than broad, 1-1.6 mm long
2. Lower leaves 3-nerved, more or less spathulate; fruit faces more or less flat
3. Flowers with bracteoles; fruits pale-buff, sessile	C. stagnalis 3.
3. Flowers lacking bracteoles; fruits dark-brown to greyish, usually on a pedicel to 15 mm long	C. hamulata 1.
2. Lower leaves l-nerved, linear
4. Fruit umbonate at the base (inner margins of carpels distinctly appressed and projecting)	C. umbonata 4.
4. Fruit not umbonate, with more or less flat faces	C. hamulata 1.

Author: Not yet available