Cladonia chlorophaea

France. In 1980 the Pb pollution produced by car exhausts on the adjacent motorway (A6) was assessed by means of several lichen species Cladonia portentosa, Cladonia chlorophaea, Lasallia pustulata, Umbilicaria grisea, H. physodes, P. caperata, Ever-nia prunastri, Lecanora conizaeoides and U. hirta. In 1992 these lichens were found to contain less Pb than twelve years previously. The average figure for all measured species in all sites displayed a similar decrease 3.2-3.S times less. The decrease of Pb fallout along the motorway was ascribed to the consumption of unleaded gasoline. 

Culberson CF, Johnson A (1976) A standardized two-dimensional thin-layer chromatographic method for lichen products. J Chromatogr 128 253-259 Culberson CF, Johnson A (1982) Substitution of methyl tert.-butyl ether for diethyl ether in the standardized thin-layer chromatographic method for lichen products. J Chromatogr 238 483-487 Culberson CF, Kristinsson H (1969) Studies on the Cladonia chlorophaea group a new species, a new meta-depside, and the identity of novochlorophaeic acid . Bryologist 72 431-443... 

Wetherbee, R. (1969). Population studies in the chemical species of the Cladonia chlorophaea group. Mich. Bot. 8, 170-174. 

Hyperhomosekikaic acid 188 125-126 Cladonia chlorophaea Ramalina amerlcana From 2-h yd roxy-4-methoxy-6- -penty 1-benzoic acid and benzyl 2,3-dihydroxy-4-methoxy-6-n-pentylbenzoate with TFAA and subsequent debenzylation (7P2) (96)... 

Pseudeverina furfuracea not yet found in lichens 110,160-162 Cladonia chlorophaea... 

Culberson CF, Culberson WL, Johnson A (1985) Orcinol-type Depsides and Depsidones in the Lichens of the Cladonia chlorophaea Group (Ascomycotina, Cladoniaceae). Bryologist 88 380... 

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