The tuberous epiphytes of the Rubiaceae 1 : A new subtribe - the Hydnophytinae

The morphology and ant-association of the five genera Hydnophytum Jack, Myrmecodia Jack, Anthorrhiza Huxley & Jebb, Squamellaria Becc. and Myrmephytum Becc. are described. On the basis of shared character states in tuber cavity development and inflorescence structure these five genera are united as a subtribe, the Hydnophytinae.