FIGURE 2. Isotrema plagiostomum X. X. Zhou & R. J. Wang. A in Isotrema plagiostomum (Aristolochiaceae), a new species from Guangdong, South China

FIGURE 2. Isotrema plagiostomum X. X. Zhou & R. J. Wang. A. Habit, showing alternate leaves and axillary inflorescences, B. Part of abaxial leaf surface, showing the pubescence, C. Front view of flower, showing the deeply "V-shaped" calyx limb, D. Longitudinal section of flower, E. Part of adaxial side of basal calyx tube, showing tomentose surface, F. Gynostemium, G. Capsule, H. Seeds. Illustrated by Bing-Mou WANG.