Culberson, WL/ Culberson, CF 1977: Chemosyndromic variation in lichens. - Syst. Bot.1: 325-339. [RLL List # 97 / Rec.# 3798] Keywords: CHEMOSYNDROMES/ CHEMISTRY/ CETRELIA/ NEW TAXA/ PARMELIACEAE
Abstract: 2 figures. 3 tables. ["Analysis of the chemistry of Cetrelia (Parmeliaceae) by new techniques reveals a type of variation that does not match the model of classical variation in the lichen-forming fungi. Instead of accumulating only one or two medullary constituents as previously believed, the 15 species of Cetrelia synthesize natural products in biogenetically meaningful sets (here called chemosyndromes) .... Comparison of the chemosyndromes of morphologically similar species groups gives evidence that the differentiation in Cetrelia occurred through a combination of parallel morphological and parallel chemical evolution." New: Cetrelia monachorum (Zahlbr.) comb. nov.]