Tubanova, D.Ya. & E.A. Ignatova. A new species of
Dicranum (Dicranaceae, Bryophyta) from Asiatic Russia
Arctoa (2011) 20: 183-190
During the revision of Dicranum in Russia, a number of
morphologically distinct specimens were revealed. They
are similar to D. acutifolium (Lindb. & Arnell) C.E.O. Jensen in
leaf shape and leaf transverse section, as well as in lamina areolation, but
differ in transversely undulate leaves with sharply protruding upper angles of
cells on dorsal side of distal lamina and costa, exhibiting resemblance with D.
drummondii Müll. Hal., and some collections
were found in various herbaria under this name. This morphology corresponds to
a small but stable difference in nuclear ITS sequence, so the species is
described here as Dicranum bardunovii sp. nov.