A new subspecies of iSaxifraga artvinensis/i V.A.Matthews (Saxifragaceae) from northeastern Anatolia

摘要

Saxifraga artvinensis V.A.Matthews, which is endemic to Turkey, was discovered on Tiryal Mountain (A8 Artvin, northeastern Turkey). Approximately 175 km from its type locality, a new population of the species was discovered, in the Picea orientalis forest in the Alt?ndere Valley National Park, in A7 Trabzon (northeastern Turkey). A comparison with the known population of S. artvinensis confirmed that this new population represented a new taxon and is described as S. artvinensis subsp. meryemii Terzio?lu & Co?kun?. An identification key and comparison with closely related taxa, based on both morphological and molecular properties, are also provided. The studied samples, belonging to subsp. artvinensis and subsp. meryemii , had identical sequences in the entire internal transcribed spacer region. On the other hand, subsp. meryemii was easily distinguishable from subsp. artvinensis by its hairy flowering stem, 3-8 flowers, subsessile pedicels, and sepals hairy at base.