Shrubs to small trees, bark smooth, stellate-tomentose. Leaves petiolate. Verticillasters in dense, terminal cylindric spikes; bracts subreniform, densely overlapping; bracteoles minute, linear. Pedicel short. Calyx campanulate, densely tomentose, slightly curved, 15-veined; teeth 5(-7), equal, triangular. Corolla white or reddish to purple-red, tubular, with a hairy annulus inside; limb 2-lipped, upper lip emarginate; lower lip 3-lobed, middle lobe larger. Stamens 4, anterior 2 longer, inserted at middle of corolla tube; filaments slender, densely puberulent at base, involute in bud, much exserted in flower; anthers 1-locellate, reniform, transversely dehiscent, basifixed. Ovary 4-lobed, tuberculate. Style slender, apex subequally 2-cleft, lobes subulate. Disc subannular, equally shallow 4-lobed. Nutlets triquetrous, oblong, apex truncate, areolae basal.
Home