Leuckert, C/ Schirrmeister, M/ Hensen, ES 1987: Chemosystematical investigation of lichens from Greenland, Dimelaena oreina (Ach.) Norm. - Botanische Jahrbucher fur Systematik108: 373-379. [RLL List # 133 / Rec.# 11430] Keywords: CHEMOTAXONOMY/ GREENLAND/ DIMELAENA/ SYSTEMATICS/ TLC/ CHEMOTYPES
Abstract: 1 table. 2 figures. [Study of 45 samples using TLC showed two chemotypes 0 (only usnic acid) and II (usnic acid and gyrophoric acid with lecanoric acid; without ovoic acid). "The distribution of the chemotypes shows the tendency of chemotype 0 -- in comparison to chemotype II -- being adapted to more severe climatic conditions." The same pattern is found in northern Europe.]