Hyssopus L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 170

31. Hyssopus L. 2

Aromatic, perennial herbs or dwarf shrubs. Verticillasters 4- to 16-flowered, in terminal, secund, spike-like inflorescences. Calyx tubular, 15-veined, with 5 equal teeth. Corolla infundibuliform, 2-lipped; upper lip erect, emarginate; lower lip patent, 3-lobed, the middle lobe the largest, emarginate. Stamens exserted, spreading; anther-cells divergent. Style-branches equal.

Literature: J. Briquet, Les Labiées des Alpes Maritimes 380- 388. Genève & Baie. 1893.