"Medicinal and Aromatic Plants XI" comprises 24 chapters. It deals with the distribution, importance, conventional propagation, micropropagation, tissue culture studies, and the in vitro production of important medicinal and pharmaceutical compounds in various species of "Anagallis," "Azadirachta," "Centranthus," "Costus," "Cuphea," "Dioscorea," "Drosera," "Fagara," "Frangula," "Hyacinthus," "Hypericum," "Jamesoniella," "Karwinskia," "Lactarius," "Lactuca," "Marribium," "Menispermum," "Ornithopus," "Petroselinum," "Phellodendron," "Solanum," "Solidago," and "Zanthoxylum," Like the previous ten volumes published between 1988 and 1998, it is tailored to the needs of advanced students, teachers, and research scientists in the field of pharmacy, plant tissue culture, phytochemistry, biomedical engineering, and plant biotechnology in general.