Source:
SSA
Description:
Herbs or suffrutices, often with ribbed branches. Leaves petiolate, entire or obscurely undulate-crenate. Inflorescence terminal, panicles or scorpioid cymes of monochasial cymes or thyrses; bracts and bracteoles small, linear. Calyx regular, hairy or with stalked glands; tube shorter than lobes; lobes 5, linear-lanceolate. Corolla 2-lipped, pilose; upper lip entire or emarginate, rugula distinct; lower lip 3-lobed; aestivation ascending; tube much longer than lobes, cylindric. Androecium: fertile stamens 2, arising in mouth of corolla, exserted; filaments linear; anthers 2-thecous; thecae superposed, muticous; staminodes 0. Pollen prolate, 3-colporate, with pseudocolpi; surface reticulate. Disc shallowly cupular, with V-shaped slit, sometimes with 2 awns. Gynoecium: ovary with 2 ovules in each locule, +/- ellipsoid, hairy; style filiform, running in rugula, exserted; style branches 2, equal, cylindriform, longer than broad. Capsule oblong, hairy, stipitate, with inelastic placental bases. Seeds suborbicular or transversely oblong; surface rough and tuberculate. x = 10 (polyploidy).
Distribution:
Species +/- 22, Africa to Asia; 3 in sthn Afr., N Namibia, Swaziland, northern and eastern provinces of South Africa.
Classification:
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