FIGURE 2 in A new species of Aristolochia subgenus Siphisia (Aristolochiaceae) from central Vietnam

FIGURE 2. Aristolochia annamensis (A–E). A. Abaxial leaf surface. B. Solitary cymes on old woody stem. C. Front view of open flower showing inner surface of limb lobes smooth. D. General view of open flower. E. Capsule (white arrow showing a triangular bracteole).— Aristolochia xuanlienensis. F. Front view of open flower showing inner surface of limb lobes densely covered with papillate. A–E photos by Lu Thi Ngan at the type locality. F photo by Nguyen Thi Thanh Huong.