Journal
PHYTOTAXA
Volume 176, Issue 1, Pages 213-218Publisher
MAGNOLIA PRESS
DOI: 10.11646/phytotaxa.176.1.21
Keywords
Microthyriaceae; phylogeny; taxonomy
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Funding
- Grant for Essential Scientific Research of National Non profit Institute [Riricaf 2013004M, CAFYBB2007002]
- National Natural Science Foundation of China [31300019]
- MFLU [56101020032]
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A new species, Microthyrium propagulensis, collected in Yunnan Province, southwestern China is introduced. The species is typical of Microthyriaceae (Microthyriales) in having superficial thyriothecia with a poorly developed basal layer and a prominent darker central ostiole, bitunicate asci and 1-septate ascospores. It is similar to the generic type, M. microscopicum, but differs in having relatively small ascospores, with two apical cilia, which lie downloads from the ascospore apex at a 45 degrees angle. Phylogenetic analysis based on combined LSU and SSU gene sequence data clearly place this species in Microthyrium, but distinguishes it from Microthyrium microscopicum. This second sequence from a Microthyrium species indicates that the putative sequence of the type of this genus is CBS has been correctly named and supports the distinctiveness of Microthyriales and Microthyriaceae.
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