?Bot. Mag. (Tokyo) 28: 295, 1914?. Submitted.

?Syst. Veg., ed. 14 (J. A. Murray)  295, 1784?. Submitted.

?Syst. Veg., ed. 14 (J. A. Murray)  295, 1784?. Submitted.

?Syst. Veg. (ed. 16) [Sprengel] 1: 934, 1825?. Submitted.

?Bull. Acad. Imp. Sci. Saint-Petersbourg 26: 483, 1880?. Submitted.

?J. Coll. Sci. Imp. Univ. Tokyo 42: 42, 1921?. Submitted.

?Ill. Gart.-Lexc. [Rumpler], ed. 3 877, 1902?. Submitted.

?J. Coll. Sci. Imp. Univ. Tokyo 6: 385, 1956?. Submitted.

?Ann. Mus. Bot. Lugduno-Batavi 2: 267, 1866?. Submitted.

?Ann. Sci. Nat., Bot. 11: 241, 1839?. Submitted.

?Gentes Herb. 2: 51, 1929?. Submitted.

?Trans. Linn. Soc. London 2: 331, 1794?. Submitted.

?Bull. Soc. Imp. Naturalistes Moscou 10: 152, 1837?. Submitted.

?Pl. Wilson. 1: 128, 1911?. Submitted.

?Bot. Mag. (Tokyo) 29: 312, 1915?. Submitted.

?Fl. Jap. (Siebold) 1: 76, 1839?. Submitted.

?Fl. Jap. (Siebold) 1: 77, 1839?. Submitted.

?J. Coll. Sci. Imp. Univ. Tokyo 42: 58, 1921?. Submitted.

?Amer. J. Sci. Arts 45: 174, 1843?. Submitted.

?Sp. Pl.  631, 1753?. Submitted.

?Fl. Ross. (Ledeb.) 2: 388, 1844?. Submitted.

?Bot. Mag. (Tokyo) 28: 123, 1914?. Submitted.

?Narr. Exped. China Japan 2: 313, 1856?. Submitted.

?Syst. Veg., ed. 14 (J. A. Murray)  216, 1784?. Submitted.

?Mem. Acad. Imp. Sci. St.-Petersbourg Divers Savans 9: 136, 1859?. Submitted.

?Gartenflora 6: 107, 1857?. Submitted.

?Trudy Imp. S.-Peterburgsk. Bot. Sada 12: 169, 1892?. Submitted.

?Gartenflora 19: 68, 1870?. Submitted.

?J. Coll. Sci. Imp. Univ. Tokyo 42: 92, 1921?. Submitted.

?J. Arnold Arbor. 2: 126, 1920?. Submitted.

?Mem. Acad. Imp. Sci. St.-Petersbourg, Ser. 7 9: 138, 1859?. Submitted.

?Trudy Imp. S.-Peterburgsk. Bot. Sada 18: 427, 1901?. Submitted.

?Enum. Pl. Jap. 2: 386, 1877?. Submitted.

?Sp. Pl. 1: 174, 1753?. Submitted.

?J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 6: 383, 1956?. Submitted.

?Fl. Kamtchatka 4: 139, 1930?. Submitted.

?Korean J. Pl. Taxon. 39: 190, 2009?. Submitted.

?Ann. Sci. Nat., Bot. ser. 4, 5: 217, 1866?. Submitted.

?Sp. Pl. 1: 269, 1753?. Submitted.

?Gartenflora 11: 407, t. 384, 1862?. Submitted.

?J. Linn. Soc., Bot. 23: 350, 1888?. Submitted.