Volume 2 of the "WHO Monographs on Selected Medicinal Plants" provides an additional collection of 30 monographs covering the quality control and traditional and clinical uses of selected medicinal plants approved by 120 experts in more than 50 countries. The monographs are intended to promote international harmonization in the quality control and use of herbal medicines and to serve as models for the development of national formularies. They are a comprehensive scientific reference for drug regulatory authorities, physicians, traditional practitioners, pharmacists, manufacturers, and research scientists. Plants covered in volume 2 Radix Althaeae. Herba Andrographidis. Radix Angelicae Sinensis. Flos Calendulae. Flos Caryophylli. Rhizoma Cimicifugae. Folium cum Flore Crataegi. Radix Eleutherococci. Aetheroleum Eucalypti. Folium Eucalypti. Cortex Frangulae. Folium et Cortex Hamamelidis. Semen Hippocastani. Herba Hyperici. Aetheroleum Melaleucae. Folium Melissae. Aetheroleum Menthae Piperitae. Folium Menthae Piperitae. Folium Ocimi sancti. Oleum Oenotherae Biennis. Rhizoma Piperis Methystici. Cortex Pruni Africaniae. Cortex Rhamni Purshianiae. Flos Sambuci. Radix senegae. Fructus serenoae Repentis. Fructus silybi Mariae. Herba Tanaceti Parthenii. Radix Urticae. Folium Uvae Ursi.