Journal
MYCOLOGICAL RESEARCH
Volume 105, Issue -, Pages 416-424Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0953756201003690
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To obtain an understanding of the phylogenetic relationships among the Grorgefischeriales, septation, cellular interactions, teliospores, basidia, cultures and nucleotide sequences from the 5' terminal domain of the nuclear large subunit rRNA e;ene were studied. Analyses of both morphological and molecular characters yield similar phylogenetic conclusions. The Georgefischeriales are divided into three groups, corresponding to the Eballistraceae, Georgefischeriaceae. and Tilletiariaceae. The basal dichotomy is between the Eballistraceae and the branch uniting the Georgefischeriaceae and Tilletiariaceae. The Tilletiariaceae are phragmobasidiate. whereas the Eballistraceae and the Georgefischeriaceae are holobasidiate. The Eballistraceae differ from the Georgefischeriaceae and Tilletiariaceae in the lack of the ballistospore mechanism. The systematic position of Tilletiopsis minor is unclear. The Eballistraceae. Eballistra and Phragmotaenium are proposed as new taxa. The descriptions of the Tilletiariaceae and Jamesdicksonia are emended. Except for Entyloma majus. E. parvum, Georgefischeria, Jamesdicksonia brunkii. J. obesa, Tilletiaria anomala. and Tolyposporella chrysopognis, the teleomorphic species of the Georgefischeriales are presented as new combinations.
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