?Engl. Bot., ed. 3B 4: 42, 1865?. Submitted.

?Nova Acta Acad. Sci. Imp. Petrop. Hist. Acad. 10: 378, 1797?. Submitted.

?Fl. Ross. (Pallas) 1: 35, 1788?. Submitted.

?Trudy Bot. Inst. Akad. Nauk S.S.S.R., Ser. 1, Fl. Sist. Vyssh. Rast. 2: 209, 1936?. Submitted.

?Bull. Int. Acad. Sci. Cracovie, Cl. Sci. Math. 0: 4, 1906?. Submitted.

?Trudy Imp. S.-Peterburgsk. Bot. Sada 22: 437, 1904?. Submitted.

?Trudy Imp. S.-Peterburgsk. Bot. Sada 22: 443, 1904?. Submitted.

?Sp. Pl.  201, 1753?. Submitted.

?Mem. Acad. Imp. Sci. St.-Petersbourg, Ser. 7 12: 42, 1868?. Submitted.

?Reise Russ. Reich. 3: 722, 1776?. Submitted.

?Abh. Math.-Phys. Cl. Konigl. Bayer. Akad. Wiss. 4: 189, 1845?. Submitted.

?Sp. Pl.  201, 1753?. Submitted.

?Mem. Acad. Imp. Sci. St.-Petersbourg Divers Savans 9: 117, 1859?. Submitted.