Description
Herbs or shrubs.
Flowers rather large, densely crowded in axillary verticillasters.
Stamens 4, ascending under upper lip of corolla;
Distribution
America present, Tropical and southern Africa present, warm parts of Asia present
About 15 spp., in tropical and southern Africa, one species occurring in warm parts of Asia and America as a weed, probably after having escaped from cultivation.
Citation
BTH. 1848 – In: DC., Prod. 12: 534
BRIQ. 1896 – In: E. & P., Nat. Pfl. Fam. 4: 246
