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KMID : 1160220140420030229
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Mycobiology
2014 Volume.42 No. 3 p.229 ~ p.240
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A Note on the Lichen Genus Ramalina (Ramalinaceae, Ascomycota) in the Hengduan Mountains in China
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Oh Soon-Ok
Wang Xin Yu
Wang Li Song
Liu Pei Gui
Hur Jae-Seoun
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Abstract
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On the basis of extensive field investigation and a series of herbarium specimen identifications, we present and discussthe descriptions and distribution of 22 species of Ramalina found in the Hengduan Mountains of southwestern China. In thisrevisionary study, representatives of the Ramalina genus, including R. americana, R. confirmata, R. dendriscoides, R. obtusata, R. pacifica, R. pentecostii, R. peruviana, R. shinanoana, and R. subcomplanata are found for the first time in this area. In addition, R. holstii is reported for the first time China. Finally, a newly described species identified as Ramalina hengduanshanensis S. O. Oh &L. S. Wang is reported. It is characterized as growing from a narrow holdfast, solid, sparsely or richly and irregularly dichotomouslybranched, palmate and flattened lobes with distinctly dorsiventral appearance, surface rugose to reticulate, surface rugoselycracked, dense chondroid tissue, helmet shaped soralia at the tip. The species grows on rock and tree at the highest elevations inthis area. Although very few lichen species belonging to the genus Ramalina have been collected above 4,000 m, this new speciesis found at this elevation. We present detailed morphological, anatomical, and chemical descriptions of this species along withmolecular phylogenetic analysis of the internal transcribed spacer rDNA sequences.
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KEYWORD
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Hengduanshan, Key, Molecular phylogeny, New species
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