Morphological and molecular identification of four new resupinate species of Lyomyces (Hymenochaetales) from southern China
Jun-zhu Chen, Changlin Zhao
Abstract
Four new wood-inhabiting fungal species, Lyomyces bambusinus , L. cremeus , L. macrosporus and L. wuliangshanensis , are proposed based on a combination of morphological and molecular evidence. Lyomyces bambusinus is characterized by resupinate basidiomata with colliculose to tuberculate hymenial surface and broadly ellipsoid, hyaline, slightly thick-walled, smooth basidiospores. Lyomyces cremeus is characterised by resupinate basidiomata with smooth, cream hymenial surface and ellipsoid, hyaline, thin-walled to slightly thick-walled basidiospores. Lyomyces macrosporus is characterized by pruinose basidiomata with reticulate hymenial surface, presence of three kinds of cystidia and larger basidiospores (6.7–8.9 × 4.4–5.4 µm). Lyomyces wuliangshanensis is characterized by coriaceous basidiomata and ellipsoid, hyaline, slightly thick-walled, smooth basidiospores. The phylogenetic analyses based on molecular data of the internal transcribed spacer (ITS) region sequences revealed that the four new species belonged to Lyomyces . Lyomyces bambusinus grouped with L. sambuci . Lyomyces cremeus clade was sister to a clade comprised of L. microfasciculatus . Lyomyces macrosporus was sister to L. allantosporus . Lyomyces wuliangshanensis was closely related to L. mascarensis .