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Pyrola rotundifolia Mert. & W.D.J.Koch var. arenaria [Ericaceae]
H.G.L. Reichenbach, Icon. Fl. Germ. Helv., vol. 17 (Die Gentianaceen, Apocynaceen, Asclepiadeen, Oleaceen, Styracaeen, Ebenaceen, Aquifoliaceen, Primulaceen, Plumbagineen, Bicornes, Caprifoliaceen, Rubiaceen der deutschen Flora
): t. 1153, fig. 2 (1855) [H.G. Reichenbach]
