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Culberson, C.F./ Culberson, W.L. 1966: The identification of imbricaric acid and a new imbricaric acid-containing lichen species. - The Bryologist 69(2): 192-202. [RLL List # 269 / Rec.# 43460]
Abstract: Cetraria alaskana, a new, endemic, tundra-inhabiting species from western Alaska, is described. It differs from its nearest relatives morphologically in lacking soredia and chemically in producing the depsides imbricaric acid and atranorin. Pure imbricaric acid was isolated from the new species and its identity proven chemically. The pure sample was used for microchemical comparisons with the chemically very closely related but much more common depsides perlatolic acid and divaricatic acid, both of which frequently occur as constituents of species closely allied taxonomically to species producing imbricaric acid.
Notes: New: Cetraria alaskana C.F.Culb. & W.L.Culb. (from U.S.A.).
URL: https://www.jstor.org/stable/3240511
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