A synopsis of chinese Racomitrium (bryopsida, grimmiaceae)

摘要

Forty-five taxa (32 species, 11 varieties and two forms) of Racomitrium have been reported from China. Among them, six species and two varieties of Racomitrium were originally described as new based on specimens collected from China. Based on this revisional study, 23 species of Racomitrium are considered to be taxonomically recognizable entities in China. Racomitrium joseph-hookeri Frisvoll is new to China. The new combination, Orthotrichum delavayi (Broth. et Par.) Cao based on Racomitrium delavayi, is made. Racomitrium varium (Mitt.) Jaeg. and R. occidentale (Ren. et Card.) Ren. et Card. should be excluded from bryoflora of China. A key to Chinese species of Racomitrium is given. The geographic distributions of Racomitrium species in China are discussed.