Figure 2.

Localization of bioactive compounds in E. purpurea, E. angustifolia, E. pallida, and E. paradoxa. Compounds in bold are present at high concentrations; italics indicate compounds found in trace amount (Sloley et al. 2001; Binns et al. 2002b; Kabganian et al. 2003; Stuart and Wills 2003).