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A.G. Dietrich, Fl. Boruss., vol. 7 : p. 0, t. 0, fig. 0 (1839) [73]
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University of Illinois Urbana-Champaign, U.S.A.
A.G. Dietrich, Fl. Boruss., vol. 7 : p. 0, t. 0, fig. 0 (1839)