Description:
Herbs or subshrubs. Leaves opposite or nearly so, sessile to shortly petiolate, entire. Flowers solitary, axillary, pedicellate. Calyx campanulate, 5-lobed; lobes +/- equal. Corolla: tube suddenly inflated above base; limb oblique, 2-lipped; lobes 5, rounded. Stamens 4, didynamous, included, dimorphic, all arising nearly on same level; upper pair smaller, with appendage; lower pair with a 2-branched connective: upper branch shorter, curved upwards and terminating in a disc-shaped appendage; anthers all 1-thecous and dehiscing by a terminal pore. Ovary 2-locular; ovules many. Capsule ovoid, 2-valved. Seeds many, rather large, angular, oblique, deeply pitted.
Distribution:
Species 7, trop. Africa; presence in sthn trop. Afr. is uncertain, but given as Angola by Brummitt (Unpublished).
Source:
SSTA
Classification:
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