?Fl. Jap. (Thunberg)  127, 1784?. Submitted.

?Pl. Medic. Chinae Bor.-orient. 787, 1989?. Submitted.

?J. Bot. 6: 134, 1868?. Submitted.

?J. Jap. Bot. 16: 260, 1940?. Submitted.

?J. Arnold Arbor. 61: 109, 1980?. Submitted.

?J. Arnold Arbor. 61: 109, 1980?. Submitted.

?Mem. Acad. Imp. Sci. St.-Petersbourg Divers Savans 9: 132, 1859?. Submitted.

?J. Arnold Arbor. 61: 109, 1980?. Submitted.

?Acta Phytotax. Geobot. 8: 52, 1939?. Submitted.

?Rev. Hort. ser. 4, 3: 105, 1854?. Submitted.

?Trees & Shrubs Brit. Isles 1: 609, 1914?. Submitted.

?Bot. Mag. (Tokyo) 39: 306, 1925?. Submitted.

?Fl. Sylv. Kor. 16: 38, 1927?. Submitted.

?Repert. Pharm. Prakt. Chem. Russ. 7: 524, 1842?. Submitted.

?Wochenschr. Gartnerei Pflanzenk. 2: 371, 1859?. Submitted.