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A very small E. Asiatic genus in which four species have been described but of which only C. calycina has been introduced to cultivation. Its nearest allies among the hardy members of the family are Idesia and Poliothyrsis.

From the Supplement (Vol. V)

A later measurement for C. calycina at Birr Castle is 42 × 3[3/4] ft (1985).

Species articles