Main features of the subsection :
Shrubs or small trees, 1-10m ; young shoots scaly , glabrous. Leaves evergreen, often aromatic, scales on lower surface dense, large. Inflorescence terminal 4-10-flowered. Calyx usually disk-like . Corolla funnel-shaped, sometimes openly so ; stamens 10, declinate ; ovary impressed below the declinate or straight style.
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