FIGURE 4. A–B in Aristolochia weixiensis, a new species of Aristolochiaceae from Yunnan, China

FIGURE 4. A–B: Aristolochia weixiensis. A. Flower (front view), B. Opened flower (showing the inside structure). C–D: A. moupinensis (calyx limb yellow). C. Flower (front view), D. Opened flower (showing the inside structure). E–F: A. moupinensis (calyx limb dark red). E. Flower (front view), F. Opened flower (showing the inside structure). G: A. moupinensis (calyx limb yellow with red spots, from Curtis's Botanical Magazine 136: pl. 8325. 1910). H: A. moupinensis (calyx limb yellow with red spots). I–J: A. moupinensis (calyx limb yellow with slight spots). I. Flower (front view), J. Opened flower (showing the inside structure).