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Krog, H 1982: Evolutionay trends in foliose and fruticose lichens of the Parmeliaceae. - Journal of the Hattori Botanical Laboratory 52: 303-311. [RLL List # 115-41 / Rec.# 10524]
Keywords: PARMELIACEAE/ ALECTORIACEAE/ USNEACEAE/ EVOLUTION/ CLASSIFICATION/ CONIDIA/ PYCNIDIA/ AFRICA
Abstract: 1 table. 2 figures. [Discussion includes recognition of four conidial types in the family and the importance of pycnidia and other characters in segregating genera and evolutionay trends. "It is possible that the alectorioid lichens, which display a high incidence of spore characters alien to the Parmeliaceae, should be segregated in a separate family, the Alectoriaceae, but at present there is no indication that further division of the Parmeliaceae, including for example the segregation of the Hypogymniaceae or the Usneaceae, is necessary."]

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