@ARTICLE{TreeBASE2Ref18601, author = {Ricarda P?tsch and J?rn Hentschel and Reynaldo Linares-Palomino and R. L. Zhu and Jochen Heinrichs}, title = {Diversification and taxonomy of the liverwort Jubula Dumort. (Jungermanniopsida: Porellales) inferred from nuclear and chloroplast DNA sequences.}, year = {2010}, keywords = {}, doi = {10.1600/036364410790862515}, url = {}, pmid = {}, journal = {American Journal of Botany}, volume = {35}, number = {1}, pages = {6--12}, abstract = {Nucleotide sequence variation in the ITS1-5.8S-ITS2 region of nuclear ribosomal DNA and in the trnL-trnF region of chloroplast DNA from 28 specimens of Jubula (Jubulaceae), and two outgroup species, was analysed using maximum parsimony and maximum likelihood. The molecular topologies supported five to six allopatric taxa in Jubula. Relationships of most of these taxa remain unresolved due to lack of support of many deeper nodes. A Principal Component Analysis indicated a broad overlap of morphological characters of these taxa. Based on the morphological similarities of the Jubula taxa and the observed low sequence variation, a subspecies concept is supported. This comprises the taxa J. hutchinsiae subsp. bogotensis, subsp. hutchinsiae, subsp. japonica, subsp. javanica and subsp. pennsylvanica. With the exception of J. hutchinsiae subsp. javanica, all these taxa are monophyletic. Multiple accessions of the temperate taxa J. hutchinsiae subsp. hutchinsiae and J. hutchinsiae subsp. pennsylvanica exhibit a lower sequence variation than the tropical taxa J. hutchinsiae subsp. bogotensis and J. hutchinsiae subsp. javanica.} }

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