Studia botanica hungarica

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Author(s): Kondratyuk, S. Y., Gromakova, A. B., Khodosovtsev, A. Y., Kim, J. A., Kondratiuk, A. S. & Hur, J.-S.
Title: Agrestia zerovii (Megasporaceae, lichen-forming Ascomycetes), a new species from southeastern Europe proved by alternative phylogenetic analysis
Year: 2015
Volume: 46
Pages: 69-94.


Abstract: Agrestia zerovii is described, illustrated, and compared here with closely related taxa. It is a member of the A. hispida complex of the steppe zone of Ukraine, southeastern Europe, and differs from A. hispida s. str. in having much thicker main thalline lobes, in forming thick “horizontal crust”, and in the lack of black tips of secondary branchlets. The position of the newly described A. zerovii in the alternative combined phylogenetic tree of the Megasporaceae with all members for which reliable data on the nrITS, nrLSU, and mtSSU sequences are hitherto available is discussed. Four new robust branches and their taxonomic diversity are discussed, i.e.: the Agrestia, the Chlorangium, the Sphaerothallia s. str., and the “Circinaria” lacunosa clades being in separate position from the Circinaria s. str. clade (additionally to five genera of the Megasporaceae, i.e. Aspicilia, Circinaria, Lobothallia, Megaspora and Sagedia accepted by previous authors). The genera Agrestia, Chlorangium, and Sphaerothallia, proposed to be resurrected, and a number of aspicilioid lichens the status of which are in need of revision are discussed. Five new combinations for the species of the genus Chlorangium (C. alpicola, C. aschabadense, C. asperum, C. gyrosum, and C. sphaerothallinum) are proposed.
Keywords: Agrestia, alternative combined phylogenetic analysis, Chlorangium, ITS and LSU nrDNA, 12S SSU mtDNA, sequences

Journal: Studia botanica hungarica
Journal abbreviation: Studia bot. hung.
ISSN: 0301-7001
Publisher: Hungarian Natural History Museum, Budapest
Editor(s): Barina, Z., Alegro, A., Buczkó, K., Hably, L., Lakušić, D., Lőkös, L., Papp, B., Shevera, M. & Szurdoki, E.