Ignatov, M.S. S. Huttunen, M. Li & Y.-F. Wang. How to know Myuroclada longiramea (Brachytheciaceae,
Bryophyta)?
Arctoa (2015) 24: 497-502
doi: 10.15298/arctoa.24.40
Morphological
variation of Myuroclada longiramea
and its distribution in Russia are described. This species was for a long time
confused with Bryhnia species. Being one of
the most variable species of Brachytheciaceae, Myuroclada
longiramea is characterized by a broad variation
in leaf shape from suborbicular to ovate-lanceolate within one stem comprising heteroblastic
series. Such a variation pattern is the main diagnostic character of the
species, usually allowing its recognition in the field. However in some cases
only a limited part of this variation is present, and
such phenotypes have often been confused with other species of the Brachytheciaceae and Amblystegiaceae.
Myuroclada longiramea
is a common species in the Russian Far East, South Siberian mountains
and has scattered localities in boreal regions of the European Russia, where it
was largely neglected earlier. Outside Russia it is known in northern China and
northern Japan.