CLADONIACEAE, PELTIGERACEAE AND OTHER LICHENS FROM NORTHWESTERN SICHUAN, CHINA

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  • Cladoniaceae Peltigeraceae and other li

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<p>  Twenty-two species of lichens of the family Cladoniaceae, belonging to the genera Cladia, Cladina, and Cladonia, 9 species of Peltigera and 7 other lichens are reported from Prov. Sichuan, China. Cladonia sinensis Stenroos & J. B. Chen (Hubei, Sichuan) and Peltigera continentalis Vitik. are described as new. Cladonia corniculata Ahti & Kashiw. is reported as new to China. Seven species of Cladoniaceae, and 7 species of Peltigera are new to Sichuan, and also Evernia divaricata (L.) Ach., E. mesomorpha Nyl., Leptogium pedicellatum P. M. Jörg., Lobaria kazawaensis (Asah.) Yoshim., Pseudocyphellaria crocata (L.) Vainio, Solorina saccata (L.) Ach. and Thamnolia vermicularis (Sw.) Schaer. var. subuliformis (Ehrh.) Schaerer are the first records for Sichuan. The presence of Cladina portentosa (Duf.) Follm., Cladonia campbelliana (Vainio) Gyelnik, and C. gracilis (L.) Willd. in Sichuan is doubted. The major aromatic lichen substances were identified in all specimens by thin-layer chromatography. Most of the taxa recorded are essentially circumpolar, and only four of them are Asiatic endemics. On the basis of the macrovegetation, the boundary of orotemperate and oroboreal vegetation zones is at ca. 2500 m. This is tested by mapping the altitudinal distribution of lichens studied. Most of the Cladoniaceae species are oroboreal, and only two species extend their range to the orotemperate zone in Sichuan. Peltigera polydactylon (Necker) Hoffm. is strictly oroboreal in the study area. P. elisabethae, P. leucophlebia, P. membranacea, and P. nigripunctata also occur in the upper part of the orotemperate zone. This is in accordance with their distribution in other parts of the world. The paper includes citation of published illustrations, nomenclature, chemistry, taxonomic notes, distribution in China and total distribution of each taxon.</p>

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