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Family :


Division :



Acaulescent or caulescent herbs or woody shrubs, occasionally epiphytes. Leaves simple, opposite, sometimes alternate or whorled, plants sometimes with one leaf, entire or dentate, exstipulate. Inflorescence axillary or terminal, simple or compound, dichasial subcapitate or solitary flowers, bracts small or absent. Flowers hermaphrodite, zygomorphic, showy. Calyx 5-lobed. Corolla 5-(4) merous, distinct tube, lobes imbricate, adaxial pair interior. Stamens 2 or 4, inserted on corolla tube, anthers connate in pairs or free staminodes 1 or 3. Disk annular. Ovary superior, 1-celled, inrolled, stigmas simple or variously lobed, ovules numerous. Fruit a linear capsule, splitting loculicidally, valves straight or twisted. Seeds numerous, small.

Key to the Genus

Serial Key Reference
1a. Fertile stamens 4 2
1b. Fertile stamens 2 4
2a. Fruits indehiscent, pulpy Rhyncotechum
2b. Fruits dehiscent 3
3a. Seeds appendaged Aeschynanthus
3b. Seeds not appendaged Stauranthera
4a. Flowers in long racemes Rhynchoglossum
4b. Flowers in open cymes 5
5a. Capsules much exceeding the small calyx, flowers racemose, subumbellate or solitary 6
5b. Capsules little longer than the rather large calyx, flowers subcapitate Tetraphyllum
6a. Stigma peltate; petioles winged or not Didymocarpus
6b. Stigma oblique, often bilobed in harizontal plane Chirita