Two new saprobic species of Helicosporium and Dictyosporium and a new host record of Neohelicomyces guizhouensis isolated from Phellodendron amurense (Rutaceae, Tracheophyta) in China

During a survey of saprobic fungi associated with the medicinal plant <i>Phellodendron amurense</i> in Guizhou Province, China, three taxa were isolated and examined. Based on morphological characteristics and multigene phylogenetic analyses, two novel species, <i>Dictyosporium phellodendri</i> (Dictyosporiaceae, Pleosporales) and <i>Helicosporium phellodendri</i> (Tubeufiaceae, Tubeufiales), are proposed. In addition, <i>Neohelicomyces guizhouensis</i> (Tubeufiaceae, Tubeufiales) is reported as a new host record. Detailed morphological descriptions, illustrations and molecular evidence are provided to support the establishment of these taxa.