FIGURE 4 in Asarum chueyi (Aristolochiaceae), a new species from the foothills of the Blue Ridge Mountains of Tennessee and Virginia, USA

FIGURE 4. UPGMA phenogram of stamen filament characters and EFA shape descriptors of calyx tube shape of the flowers of A. contractum (red), A. chueyi (black), A. heterophyllum (green), and A. minus (pink).