2021086 1042296 Uncaria rhynchophylla (Miq.) Miq. ex Havil. [125 692934 Nauclea rhynchophylla Miq.] T. Nakai, Trees Shrubs Japan, vol. 1 : p. 383, fig. 201 [二百〇一] (1935-1951)
 
2357892 1042296 Uncaria rhynchophylla (Miq.) Miq. ex Havil. [80 692934 Nauclea rhynchophylla Miq.] J. Ohwi, Flora of Japan (in English): t. 16 (1965) [K. Inami]