Gesnerioideae
Gesnerioideae is a subfamily within the family Gesneriaceae, which belongs to the order Lamiales of the asterid clade of angiosperms. The subfamily is primarily characterized by herbaceous or subshrubby growth forms, opposite leaves that are usually simple and entire, and flowers that are zygomorphic with a tubular corolla. Petals are often fused into a corolla tube and frequently exhibit a pronounced constriction between the upper and lower lips, a feature that facilitates specialized pollination by bees, hummingbirds, or wind in some cases. The ovary is typically apocarpous with two carpels that usually do not fuse, and the fruits are small capsules or seeds that may be dispersed by wind or gravity.
Gesnerioideae is chiefly distributed in tropical and subtropical regions of the Americas and Asia, with the
Ecologically, species in Gesnerioideae serve important roles as pioneer plants in disturbed habitats and as food
From a taxonomic standpoint, the subfamily has been revised multiple times based on morphological and molecular