Main features of the subsection :
Small shrubs, to 2m ; young shoots often setose. Leaves evergreen or deciduous, glabrous or pilose, scales on lower surface distant, vesicular , large. Inflorescence terminal, 2-5-flowered. Calyx rim-like to clearly lobed. Corolla funnel-campanulate ; stamens 10, regularly arranged ; ovary impressed below the sharply deflexed style. Seeds unwinged and obscurely finned.
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