?Bot. Mag. (Tokyo) 32: 13, 1918?. Submitted.

?Bot. Mag. (Tokyo) 31: 245, 1917?. Submitted.

?Revis. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 0, 1996?. Submitted.

?Mitt. Deutsch. Dendrol. Ges. 22: 259, 1913?. Submitted.

?Repert. Spec. Nov. Regni Veg. 12: 101, 1913?. Submitted.

?Repert. Spec. Nov. Regni Veg. 5: 100, 1908?. Submitted.

?J. Jap. Bot. 62: 260, 1987?. Submitted.

?Bot. Mag. (Tokyo) 34: 274, 1920?. Submitted.

?Seikyu 32: 80, 1938?. Submitted.

?J. Jap. Bot. 15: 535, 1939?. Submitted.

?Revis. Gen. Rhododendron Japan, Taiwan, Korea & Sakhalin 1: 44, 1996?. Submitted.

?Gartenflora 35: 565, t. 1233 a & b, 1886?. Submitted.