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Henssen, A 1992: Placoparmelia patagonica, a new lichen genus and species from Argentina (Parmeliaceae). - Lichenologist 24(2): 133-142. [RLL List # 148 / Rec.# 8350]
Abstract: 24 fig. ["Placoparmelia patagonica Henssen gen. et sp. nov. is described from two localities in Argentina. The placodioid thallus of P. patagonica has a primitive paraplectenchymatous upper cortex in parts but is devoid of a clearly defined lower cortex, true rhizines or tufts of rhizoidal hyphae. The upper surface is minutely porous and reacts HNO3+ blue-green indicating the presence of glomellifera brown."]

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