Ignatov, M.S., Yu.S. Ishchenko & O.I.
Kuznetsova. 2022. The genus Jochenia
(Bryophyta) in
Arctoa (2022) 31: 34–43
doi: 10.15298/arctoa.31.05
Jochenia pallescens s.l., commonly known as Hypnum (or Stereodon)
pallescens has been treated as a monospecific group. Some authors, however,
distinguished a second species, most commonly called Hypnum reptile,
while other authors accepted it as a variety of H. pallescens. Recent
molecular phylogenetic studies proved the existence of two genetic entities
within Jochenia. One species, J. pallescens, is widespread in the
Holarctic, whereas the distribution and morphological delimitation of another
species, J. protuberans, were not clear. The present study addresses the
elucidation of morphological distinctions and geographical distributions of
these two species. Jochenia protuberans is likely confined to the areas
with humid climate. It occurs in the Russian Far East in Kamchatka, Kuril
Islands,