Potentilla ulrichii is described as a species new to science and illustrated. Its taxonomic position close to P. nerimaniae and P. davisii of SW Turkey is discussed and SEM micrographs of the nutlets and the indumentum of these three species are presented. Their ranges, plus those of the more distantly allied P. isaurica, P. libanotica and P. arcadiensis, are mapped. The description of the nutlets of P. nerimaniae is corrected from smooth to reticulate-scrobiculate. P. ulrichii is a Mediterranean cushion-forming perennial of overhanging limestone rocks known from a single locality in foothills of the S Anatolian Taurus above Manavgat. The chasmophytic habit, its relationship and its stenochory suggest it to be a Tertiary relic endemic.
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