Notes on Potentilla (Rosaceae) XIV. Type specimens in the Lehmann herbarium

The Lehmann herbarium of the genus Potentilla has been deposited in Prague (PR) since 1865. It contains type specimens of 172 species (52 species described by Lehmann, and 120 species described by 52 other authors) and 32 varieties. The present study provides an alphabetical list of all types of Potentilla preserved in the Lehmann herbarium, with basic data, including detailed taxonomic identification. The present revision of Lehmanns type specimens resulted in necessary changes of some names. The name P. bipinnatifida Dougl. ex Hook. 1833 should be replaced by P. normalis Besser ex Spreng. 1827, P. amurensis Maxim. 1859 by P. hyenii Roth 1821 and P. stolonifera Lehm. 1831 by P. sprengeliana Lehm. 1820 (the correct name of P. sprengeliana sensu Juz. 1941 is P. sachalinensis Juz. 1955). P. virgata Lehm. 1820 is an older name for P. dealbata Bunge in Ledeb. 1830. The type specimens of P. pulcherrima Lehm. are hybrid plants; the non-hybrid species designated by this name should be named P. filicaulis Rydb. Similarly, the lectotype of P. diversifolia Lehm. is a hybrid and the non-hybrid species designated by this name should be named P. glaucophylla Lehm. The type specimen of P. multijuga Lehm. belongs to Horkelia cuneata Lindt.