?Rhodora 6: 178, 1904?. Submitted.

?Trudy Glavn. Bot. Sada 5: 195, 1907?. Submitted.

?Prodr. (DC.) 7: 773, 1839?. Submitted.

?Fl. Zapadnoi Sibiri 9: 2097, 1937?. Submitted.

?Novit. Bot. Univ. Carol.  31, 1967?. Submitted.

?Deutsche Bot. Monatsschr. 22: 50, 1911?. Submitted.

?Oesterr. Bot. Z. 64: 233, 1914?. Submitted.

?Fl. Symb. Orient.-Asiat. 74, 1930?. Submitted.

?Oesterr. Bot. Z. 64: 245, 1914?. Submitted.

?Fl. Jap. (Ohwi) 875, 1953?. Submitted.

?Bull. Acad. Imp. Sci. Saint-Petersbourg 18: 52, 1872?. Submitted.

?Bot. Mag. (Tokyo) 27: 24, 1913?. Submitted.

?Bull. Acad. Imp. Sci. Saint-Petersbourg 11: 433, 1867?. Submitted.

?Fl. Ross. (Ledeb.) 2(2, 7): 930, 1846?. Submitted.

?Linnaea 1: 514, 1826?. Submitted.

?Deutsche Bot. Monatsschr. 22: 18, 1910?. Submitted.

?Bot. Mag. (Tokyo) 101: 492, 1988?. Submitted.

?Trudy Glavn. Bot. Sada 39: 36, 1923?. Submitted.

?Linnaea 28: 57, 1856?. Submitted.

?Sp. Pl.  396, 1753?. Submitted.

?Mem. Acad. Imp. Sci. St.-Petersbourg Divers Savans 9: 190, 1859?. Submitted.