R. C.  Ching, ?The Studies of Chinese Ferns-XXXIII?, Bulletin of the Fan Memorial Institute of Biology: Botany, vol. 10, 1940.

R. C.  Ching, ?The Studies of Chinese Ferns-XXXV?, Bulletin of the Fan Memorial Institute of Biology: Botany, vol. 1, 1930.

R. C.  Ching, ?The studies of Chinese Ferns XXX?, Bulletin of the Fan Memorial Institute of Biology: Botany, vol. 10, 1940.