E. D.  Merrill and Chun, W. Y., ?Additions to our knowledge of the Hainan flora, II?, SunyatseniaSunyatsenia, vol. 2, pp. 223-232; fig. 22-25, 1935.

E. D.  Merrill and Chun, W. Y., ?Additions to our knowledge of the Hainan Flora, III?, SunyatseniaSunyatsenia, vol. 5, pp. 58-63, 1940.

E. D.  Merrill and Chun, W. Y., ?Contributions to our knowledge of the Kwangtung flora (2)?, SunyatseniaSunyatsenia, vol. 2, pp. 6-9; pl. 1-4, 1934.

E. D.  Merrill and Chun, W. Y., ?Additions to our knowledge of the Hainan Flora?, SunyatseniaSunyatsenia, vol. 2, pp. 26-28, 1934.