1. Abulfatih, H. A. 1984a. Elevationally restricted floral elements of Asir Mountains, Saudi Arabia. J. Arid Environ. 7:35–41.
2. Abulfatih, H. A. 1984b. Wild plants from Abha and the surrounding areas. Saudi Publishing and Distributing House, Jeddah, Saudi Arabia.
3. Al-Yahya, M. A., M. S. Hifnawy, J. S. Mossa, I. A. Al-Meshal, and A. G. Mekkawi. 1984. Aromatic plants of Saudi Arabia. Part V. Essential oil of Lavandula pubescens Decne. Proc. Saudi Biol. Soc. 7:191–200.
4. Ayensu, E. S. 1981. Medicinal plants of the West Indies. Reference Publications, Algonac, Michigan.
5. Collenette, S. 1985. Flowers of Saudi Arabia. Scorpion Publishing, London.