Putoria Pers.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 3

1. Putoria Pers. 12

Dwarf shrubs. Leaves opposite; stipules small, interpetiolar, more or less fused. Flowers in small fascicles. Calyx 4-toothed, persistent in fruit. Corolla infundibuliform with a long tube, 4-lobed. Style filiform, with short 2-lobed stigma. Ovary 2- locular with 1 ovule in each loculus. Fruit a drupe with 2 pyrenes.