Abstract
The holotype of the type species of Pauahia, the foliicolous P. sideroxyli from Hawaiian Islands, is illustrated and redescribed. The superficial, hypophyllous fructifications consist of crowded perithecial locules in a crustose stroma with minimal, free, fringing hyphae. Petrak's view that this fungus is a “Meliolineae” is confirmed by the detection of additional features, including stalked hyphopodia, phialides, neck cells with distally thickened laminated walls in and around ostioles, and curved three-septate ascospores which germinate unilaterally from thinner-walled zones of their flattened to concave surface.