Source:
SSA
Description:
Annual or perennial herbs or subshrubs; stems and leaves often fleshy. Leaves subentire. Inflorescences usually terminal, paniculate; flowers small, placed singly or in pairs in lax or dense spikes or racemes; bracts small. Calyx small and shortly 5-toothed at flowering, elongate and often becoming truncate at maturity, eventually circumscissile near base. Corolla bilabiate; tube narrowly cylindrical at base, widening upwards, straight or curved; upper lip obscurely 4-lobed, lower lip larger, concave, entire or toothed near apex. Stamens didynamous, arising in corolla mouth, declinate, usually lying in lower corolla lip; filaments free; anthers confluent, 1-thecous. Style shortly 2-fid, exserted beyond stamens. Nutlets orbicular or ovoid, flattened, smooth. x = 9 (17) (1 report each).
Distribution:
Species 43, in tropical and warm regions of Africa; 6 species found in northern parts of Namibia and Botswana and eastern regions of sthn Afr.: Northern Province, Gauteng, Mpumalanga, Swaziland, KwaZulu-Natal and Eastern Cape.
Classification:
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