Illustration of Artabotrys pachypetalus sp. nov. A flowering branch, showing the hooked inflorescence with multiple flowers B lateral view of the flower C adaxial view of the flower, showing three outer petals and three inner petals forming a closed floral chamber D adaxial view of the sepals and torus with stamens and carpels E abaxial view of the sepals F adaxial view of the outer petal G abaxial view of the outer petal H adaxial view of the inner petal I abaxial view of the inner petal J adaxial view of the stamen, showing the rounded connective apex with a sharp edge K abaxial view of the stamen, showing four thecae L carpel, showing the clavate stigma and two basal ovules M immature fruit N seed. Drawn by Yun-Xiao Liu, X.X. Zhou, G.T. Wang & Y.N. Guo 0028 (A–L); B. Xue XB342 (M, N).