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?Reise Russ. Reich. 3: 422, 1776?. Submitted.

?Linnaea 6: 537, 1831?. Submitted.

?Reise Russ. Reich. 3: 758, 1776?. Submitted.

?Tent. Fl. Germ. 1: 405, 1788?. Submitted.

?Bull. Soc. Imp. Naturalistes Moscou 38: 412, 1865?. Submitted.

?Bull. Soc. Imp. Naturalistes Moscou 54(1): 47, 1879?. Submitted.