Lichens Cetraria nivalis

Gaskell SJ, Eglinton G, Bruun T (1973) Hydrocarbon constituents of three species of Norwegian lichens Cetraria nivalis, C. crispa, and Siphula ceratites. Phytochemistry 12 1174-1176... 

Wilkins AL (1977) The structure of a triterpenoid ketol from Cetraria nivalis. Phytochemistry 16 608-609 Wilkins AL (1980) Nephrin structure and occurrence in Nephroma species. Phytochemistry 19 696-697 Wilkins AL, Elix JA (1990) New fernene triterpenes from the lichen Pseudocyphellaria aurata. Aust J Chem 43 623-627... 

The plant growth hormone ethylene was detected in the lichen Ramalina duriaei by Epstein 281, 282). Ott and Zwoch 569) analyzed Cetraria islandica, Cladonia rangiferina, C. arbuscula, C. sulfurina, C. cornuta, C. pyxidata, Peltigera lactucifolia and Usnea aurantiaco-ater for ethylene and found it in amounts of 0.8-5.5 pl/g dry weight/ hour. The presence of hydrocarbons with 17-33 carbon atoms has been reported 317) in Cetraria nivalis, C. crispa and Siphula ceratites in other lichens C-27, C-29 and C-31 were the main hydrocarbons 765). The hydrocarbons of the odoriferous fraction of Evernia prunastri have been examined 357). 

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