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Flavoparmelia baltimorensis (Gyeln. & Fóriss) Hale, Parmotrema yodae (Kurok.) Hale and Xanthoparmelia braziliensis Nash & Elix se citan por primera vez como parte de la micota liquenizada de Argentina, coleccionadas en provincias del noroeste y centro-oeste. Asimismo, se presentan nuevos datos de distribución para provincias de Argentina de doce especies de Parmeliaceae (Ascomycota liquenizados). Las especies corresponden a los géneros que se enumeran a continuación, indicando entre paréntesis el número de especies tratadas para cada uno: Everniastrum Hale ex Sipman (1), Flavoparmelia Hale (1), Hypotrachyna (Vain.) Hale (1), Parmotrema Mass. (4), Punctelia Krog (4). Se describen brevemente las 14 especies, se incluyen sus distribuciones geográficas al nivel mundial y dentro del país, y se las categoriza biogeográficamente. Flavoparmelia baltimorensis (Gyeln. & Fóriss) Hale, Parmotrema yodae (Kurok.) Hale and Xanthoparmelia braziliensis Nash & Elix, are reported for the first time for Argentina, which were collected in north-western and central- western provinces. In addition, new distribution reports from Argentine provinces for twelve species in the Parmeliaceae (Lichenized Ascomycota) are given. They correspond to the following enumerated genera, indicating in brackets the number of species treated for each one: Everniastrum Hale ex Sipman (1), Flavoparmelia Hale (1), Hypotrachyna (Vain.) Hale (1), Parmotrema Mass. (4), Punctelia Krog (4). The 14 species are briefly described and categorized with respect to their world geographic distribution. The distributions inside Argentina are also given for each species. Fil: Adler, Monica Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina Fil: Calvelo, Susana. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina

The world distribution of nine species of the Parmeliaceae is presented including new localities in Argentina. Flavoparmelia amplexa (Stirt.) Hale, formerly known exclusively from Africa, is cited for the first time for the American continent, and is therefore categorized as a South American-African species, whereas F. springtonensis (Elix) Hale, until now known as an Australasian endemic, is reported for the first time for America as well and consequently categorized as a South American-Australasian species. World distribution maps of each species are included. Fil: Adler, Monica Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina Fil: Calvelo, Susana. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche; Argentina

The present study is the first review of the foliose Parmeliaceae s. lat. lichens from andean and subandean Patagonia and Tierra del Fuego (southern South-America, 37°to 55° S). It covers habitats of Nothofagus forests includedin the Subantarctic Province (Antarctic Region) and theshrubby and graminean steppe of the Altoandinean and Patagonic Provinces (Neotropical Region). Six maps of the areaare included. The work is based on the study of ca. 500 specimenscollected by the author and herbarium collections from ASU, BAFC, BCRU, BM, BP, CHR, CTES, H, LIL, MB, MERL, SI, UPS. All collections have been studied in their morphology,anatomy and Chemistry, including TLC. The delimitation of Parmeliaceae s. lat. is discussedand a diagnosis is given. Forty seven species and two subspecies, included innineteen different genus are reported. Each genera ischaracterized and a key to identify the genera is presented,as well as a key to identify species within each genus. Morphological, anatomical and chemical features of eachspecies are given. When new features are decribed, they areillustrated. Taxonomic affinities, ecological behavior andintraspecific variability are discussed. The distribution ofeach taxa is given. The different habitats and species areillustrated by 92 photographs. Sixteen species are reported for the first time from Argentina, among which one for the first time for the Southern Hemisphere, three for southern-South America andthree for the first time outside Australasia. Severalsynonymies are discussed. Chemical data on Menegazzia species from southern South America are presented for the first time and somecollections are considered as possible new species. Biogeographically it was found that only three speciesare common to the centrally located Buenos Aires Province (Argentina), while two genera, twenty species belonging totwelve genera and three subspecies are shared with Australasia. This data are a further evidence of the resemblance ofthe cool temperate Nothofagus forests of circumantarcticterritories, formerly belonging to Gondwanaland. The work is considered a contribution to thebiodiversity of the area, due to the new taxa reported aswell as for the intraspecific variability described. It isalso considered as a good base to start researches on theuse of lichens as bioindicators, as done recently throughthe evaluation of elemental composition of some Parmeliaceaelichens. Fil: Calvelo, Susana. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.