Aristolochia gongchengensis Y.S. Huang, Y.D. Peng & C.R. Lin, a new species of Aristolochiaceae is described and illustrated from the limestone areas in Guangxi, China. It is similar to A. kwangsiensis, A. mulunensis and A. scytophylla, but differs from the three by its conspicuously concave adaxial leaf veins; ca. 1.5 mm long, triangular-ovate bracteoles; ca. 1.5 cm long basal portion of perianth tube; deeply 3-lobed calyx limb; lobes being triangular-oblong, ca. 2 cm long, ca. 1.5 cm wide, adaxially densely dark purple and with verrucose protuberances; throat which is obscured by connate bases of lobes; ca. 0.6 cm long ovary; and 3-lobed gynostemium with round lobe apices and glabrous margins.
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Vol. 52 • No. 5–6