A comprehensive survey of the liverwort family Pelliaceae including molecular, morphological and biogeographical data reveals a deep split of the taxa into two main clades each corresponding to a morphologically clearly delimited group. Therefore, the recognition of two distinct genera
within the Pelliaceae is suggested: (1) Pellia, which comprises P. appalachiana, P. columbiana, P. epiphylla, and P. neesiana, and (2) Apopellia, formerly described as a subgenus of Pellia including A. alpicola, A. endiviifolia,
and A. megaspora. According to phylogenetic analyses of a concatenated sequence matrix spanning three plastid regions (trnL-F, rps4, rpl16), P. epiphylla var. borealis is nested within P. epiphylla. There is conflicting evidence for the monophyly
of A. megaspora. While maximum likelihood significantly supports its monophyly, Bayesian inference resolves a grade of eastern and western North American specimens. Apopellia endiviifolia is monophyletic but forms three genetically distinct groups of different geographical distribution.
Shared characters of Apopellia vs. Pellia are: apical cell wedge-shaped vs. hemidiscoid, slime hairs pluricellular vs. two-celled, thickening bands lacking vs. well developed, male tubercles aperture cells inconspicuous vs. cells papilliforme, archegonia posture erect vs. horizontal
to ascending, calyptra smooth vs. two-celled hairs. Both, a description including habitat and distribution of all seven currently known species of Pelliaceae and a key to the species is provided.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Article Media
Document Type: Research Article
Staatliches Museum für Naturkunde Stuttgart, Rosenstein 1, 70191 Stuttgart, Germany, Martin Nebel;, Email: [email protected]
Nees-Institut für Biodiversität der Pflanzen, Rheinische Friedrich-Wilhelms-Universität Bonn, Meckenheimer Allee 170, 53115 Bonn, Germany
Staatliches Museum fur Naturkunde Stuttgart, Rosenstein 1, 70191 Stuttgart, Germany
Publication date: 03 May 2016
More about this publication?