Asperula rupestris, Tineo

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 : 11

43. A. rupestris Tineo , Cat. Pl. Horti Panorm. 276 (1827).

Stems (10-)15-45(-50) cm, more or less woody at base, ascending, rigid, robust, usually glabrous, sometimes densely hairy; internodes usually more than 12, the upper distinctly longer. Leaves (10-) 18-25(-30)x(l-)2-3 mm, oblanceolate, shortly acuminate, thickish, glabrous or hairy, blackening when dry. Inflorescences with one to several long-pedunculate capitula. Corolla narrowly infundibuliform, reddish, glabrous; tube 4-6(-8*5) mm; lobes 2-2-5 mm, ovate, more or less flat. Fruit 2-4 mm, glabrous. Calcareous rocks. • N. W. & S.E. Sicilia, Isole Egadi. Si.