Periconia notabilis sp. nov. and a new record and notes on the genus in Thailand

Periconia notabilis is described and illustrated as a new species discovered on a dead twig of Delonix regia in a terrestrial habitat, Pathum Thani Province, Thailand. It differs from all other Periconia species by its pale brown to brown spherical sheath around each conidiophore regeneration point. Periconia obscurata is reported from Thailand for the first time, and five other Periconia spp. are described and illustrated from Thai collections.