T.  Makino, ?Observations on the flora of Japan?, Bot. Mag. (Tokyo), vol. 17, pp. 6 - 14, 1903.

T.  Makino, ?Observations on the flora of Japan?, Bot. Mag. (Tokyo), vol. 17, pp. 208 - 217, 1903.

T.  Makino, ?Observations of the flora of Japan?, Bot. Mag. (Tokyo), vol. 17, pp. 144 - 152, 1903.