CODON, in botany: A genus of the monogynia order, belonging to the decandria class of plants. The calyx is decampartite, with the segments alternately long and short; the corolla campanulated, with the limb decampartite and equal; the nectarium decemlocular, of ten scales inserted into the heels of the stamens; the feed-case bilocular; the seeds hairy, roundish, in a dry coloured pulp.