Fig 6 - uploaded by Viacheslav Spirin
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Microscopic structures of Basidiodendron luteogriseum (Larsson 16022): (a) basidia-bearing hypha with collapsed basidial cells, turgid basidia and gloeocystidia; (b) basidiospores. Scale bar = 10 m.
Source publication
To date, Basidiodendron luteogriseum, the generic type of Basidiodendron (Auriculariales, Basidiomycota)
has been treated as a synonym of B. eyrei. Our data show they are not conspecific. The identity of other members
of the B.eyrei complex, i.e. B.deminutum and B.grandinioides, is clarified based on morphological and DNA data, and
10 new species a...
Citations
... Herbarium acronyms are given according to Thiers (2022). Microscopic routine and terminology follow Spirin et al. (2020). For microscopic study, small cross-sections of dried basidiocarps were rehydrated for 30-40 min and then mounted in lactic acid-based Cotton ...
... Intraspecific variation of TEF1 is higher in this complex than interspecific variation of some other species, and phylogenetic signal is also mixed, placing some TEF1 copies far outside of the core P. gelatinosum clade (Fig. 5). Our previous studies of the Auriculariales (Spirin et al. 2018(Spirin et al. , 2019(Spirin et al. , 2020(Spirin et al. , 2021 revealed no conflicts between ITS-LSU-and TEF1-based phylogenies. Therefore, Pseudohydnum is the first documented case of obvious discordance between these markers. ...
Taxonomy of Pseudohydnum gelatinosum and its sister taxa is revised via morphological data and a four-gene dataset (ITS, ncLSU rDNA, TEF1, RPB1). Identity of P. gelatinosum and Tremellodon pusillus is re-established based on newly collected and sequenced material from their type localities. Pseudohydnum alienum from Europe; P. umbrosum from temperate East Asia; P. cystidiatum, P. meridianum, and P. placibile from Vietnam; and P. omnipavum from North America are described as new to science; P. translucens and P. brunneiceps from East Asia are redescribed. Most Pseudohydnum collections from North America belong to P. gelatinosum ssp. pusillum. A signifcant divergence of TEF1 sequences in P. gelatinosum is discussed
Taxonomy of Basidiodendron caesiocinereum complex is revised based on morphological and molecular methods (with the use of nc LSU rDNA, ITS and TEF1 regions). The basidiospore ornamentation is justified as a key morphological character for the species recognition in the group. As redefined here, B. caesiocinereum is an angiosperm-dwelling species with smooth basidiospores. Bourdotia cinerella and B. cinerella var. trachyspora are proved to represent separate species with warted basidiospores; they are reintroduced as Basidiodendron cinerellum and B. trachysporum. Additionally, eight new species related to B. caesiocinereum are described based on material from Eurasia, North America and Africa, and identity of B. spinosum from Oceania is discussed.
