supported by the National Natural Science Foundation of China(grantno.30670152);the National Infrastructure of Natural Resources for Science and Technology(grant no.2005DKA21403);the Natural Science Foundation of Hebei Province,China(no.C2008000158)
The phylogeny of Ptychostomum was first spacer (ITS) region of the nuclear ribosomal (nr) DNA DNA rps4 sequences. Maximum parsimony, maximum undertaken based on analysis of the internal transcribed and by combinin...