This study introduces the new genus Honghemyces in the family Bezerromycetaceae (Tubeufiales) based on morphological features and multi-locus (ITS, LSU, SSU, tef1-α and rpb2) phylogenetic analyses. This fungus was found on dead twigs of Pterolobium macropterum (Fabaceae) during an expedition to Honghe County in China. Phylogenetically, Honghemyces and Bezerromyces are related genera in Bezerromycetaceae. Honghemyces pterolobii is morphologically characterised by the production of semi-immersed to superficial, subglobose and glabrous ascomata, clavate, short pedicellate asci with a minute ocular chamber, ellipsoidal, hyaline and three-septate ascospores and globose to subglobose chlamydospores forming a chain of a torulose-like structure.
Tag: new species
New host and geographical records of Rhytidhysteron in northern Thailand, and species synonymization
During a survey of micro-fungi in Chiang Mai Province, Thailand, fruiting bodies of Rhytidhysteron growing on dead twigs of several host plants were collected. Phylogenetic analyses of a combined LSU, ITS, SSU, and TEF1 sequence data along with morphological characteristics, were used to identify the new collections as R. bruguierae, R. neorufulum and R. subrufulum which were collected from Murraya paniculata, Rosa × damascena, and Prunus sp., respectively. These Rhytidhysteron species are reported herein from these hosts for the first time. Interestingly, R. subrufulum is the first geographical record of this species from Thailand, which extends knowledge of the geographic range of this species. In addition, we synonymize R. erioi under R. bruguierae and R. mengziense under R. ligustrum based on phylogenetic analyses and morphology.