Wang, C.-H.; Liu, Z.-E.; Li, Y.; Wang, X.-F.

Wang, C.H., Liu, Z.E., Li, Y. & Wang, X.F. (2018) A New Species Rubia urceolata (Rubiaceae: Rubieae) from Shennongjia National Park, Central China. Phytotaxa 357 (3): 220–224.

. Phytotaxa 2018, 373, 300–300.