Robyns, W. (1967) Turneraceae Flore du Congo du Rwanda et du Burundi Jardin Botanique National de Belgique
Description of the genus
Annual herb (in ours). Plant heterophyllous (in ours). Inflorescences axillary, secund racemes. Sepals fused into a cylindric tube.
Petals yellow to orange, without a ligule. Ovary 1-locular. Capsule ellipsoid, not constricted between the seeds.
Seeds curved