The Families of Flowering Plants L. Watson and M. J. Dallwitz Dioscoreaceae R. Br. Including Cladophyllaceae Dulac, Stenomeridaceae J.G. Agardh, Tamaceae S.F. Gray Excluding Trichopodaceae Habit and leaf form . Shrubs, or herbs, or lianas. Mesophytic, or xerophytic.
Leaves stipulate, or exstipulate.
General anatomy . Accumulated starch other than exclusively 'pteridophyte type'. Leaf anatomy . The mesophyll usually containing calcium oxalate crystals. Stem anatomy .