Main features of the subsection :
Shrubs, often large, to 10m ; young shoots scaly , sometimes setose. Leaves usually evergreen, occasionally deciduous, sometimes pubescent, especially on midrib and veins , scales on lower surface lax or dense, rimmed or rimless, sometimes of two kinds. Inflorescence terminal and axillary, 1-3-flowered, occasionally with several inflorescences coalescing to form a compound inflorescence. Calyx usually minute. Corolla strongly zygomorphic , openly funnel-shaped ; stamens 10, declinate ; ovary impressed below the declinate style. Seeds unwinged and with very small obscure fins.
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