Sylvainia natalensis. A. Flower branch. B. Leaves. C. Stipule. D. Abaxial side of leaf with hairy crypt domatia. E. Adaxial side of leaf with bulges caused by domatia. F. Partial inflorescence. G. Perfect flower. H. Unfolded corolla. I. Style and stigma. J. Fruit, ventral side. K. Dorsal view of seed with reduced aril. L. Lateral view of seed with reduced aril. M. Longitudinal section through fruit and with one seed per locule. Drawn by Laura Simón.