The Families of Flowering Plants L. Watson and M. J. Dallwitz Gesneriaceae Dum. Godr., Replicataceae Dulac Habit and leaf form . Leaves well developed . Plants non-succulent . With a basal aggregation of leaves, or with neither basal nor terminal aggregations of leaves.
Leaves exstipulate .
Lamina margins entire, or serrate, or dentate. Leaves without a persistent basal meristem. Leaf anatomy . Adaxial hypodermis present, or absent. Secretory cavities when present, containing oil, or containing resin.