Dicranum transsylvanicum (Musci, Dicranaceae), a new species from Romania

Abstract

Dicranum transsylvanicum Luth is described and illustrated as a new species from the Apuseni Mountains in western Romania. The new species resembles D. scoparium Hedw. in habit and D. crassifolium Sergio, Ochyra & Seneca in microscopic details, especially in its partially bistratose lamina cells in the upper half of the leaf, but differs in having a strongly spinose leaf lamina on the dorsal side, irregularly dentate leaf margins in the upper part and a triangular stem in transverse section.