The Asian genus Struckia Müll.Hal. is reduced to a synonym of Plagiothecium Bruch & Schimp. according to a phylogenetic analysis involving S. argentata (Mitt.) Mü ll.Hal., S. enervis (Broth.) Ignatov, T.J.Kop. & D.G.Long and 13 representative boreal species of Plagiothecium. Two nuclear regions, ITS and partial gapC, and five chloroplast regions, rbcL, rps4-trnS, psaB, trnG and trnL-F, were utilized to reconstruct the phylogenetic relationship between Struckia and Plagiothecium. Bayesian, maximum parsimony, and maximum likelihood analyses resulted in a strongly supported clade including Struckia and Plagiothecium. Plagiothecium handelii Broth. and P. paleaceum (Mitt.) A.Jaeger, which share similar geographical ranges with Struckia and intermediate morphological traits between Struckia and Plagiothecium, grouped with the Chinese Struckia, and all of them appeared as sister to the 'core' of Plagiothecium. The accurate position of P. piliferum (Sw.) Schimp. remains unclear due to moderate support from all analyses, and we suggest that it is retained in Plagiothecium until further evidence is available.
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Plant Science