Abstract
We present major cladistic analyses of the Lecanoromycetes (Ascomycota, Fungi) focusing on the Lecanorales suborder Peltigerineae, a group including the majority of the cyanobacterial lichens. DNA sequence datasets from the mtSSU and nLSU rDNA were produced and analyzed with maximum parsimony and parsimony jackknifing. The results suggest that the Lecanorales is monophyletic. The Peltigerineae (including Placynthiaceae, Peltigeraceae, Lobariaceae, Nephromataceae, Collemataceae, Coccocarpiaceae, Pannariaceae, and Massalongia) is likewise a monophyletic group. The Lobariaceae, and Lobaria in the traditional sense, are strongly supported as monophyletic, in contrast to results of other investigations based on nITS rDNA data. Pseudocyphellaria may be paraphyletic. Placynthiaceae is the sister group to the Collemataceae and Collema may be nested within Leptogium. Pannariaceae in the traditional sense is not a monophyletic group. Finally, the Lecanorineae is nonmonophyletic in all analyses, and the Cladoniineae and Teloschistineae are nested within the Lecanorineae in the combined analysis.
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