title: Jahnula species from North and Central America, including three new species.
abstract: Three new species of loculoascomycetes collected from freshwater habitats in North America are described as new species of Jahnula (Jahnulales, Dothideomycetes). All three share these morphological features: hyaline to blackish translucent, membranous ascomata with subtending, wide, septate brown, spreading hyphae; peridia composed of large angular cells; hamathecium of septate pseudoparaphyses; 8-spored, clavate to cylindrical asci; and 1-septate, broadly fusiform, brown, multiguttulate ascospores. Four additional species, J. aquatica, J. bipolaris, J. potamophila, and J. seychellensis, are reported for the first time from the western hemisphere.
authors.affiliation: Department of Plant Biology, University of Illinois, Room 265 Morrill Hall, 505 South Goodwin Avenue, Urbana, Illinois 61801, USA. raja@life.uiuc.edu
authors.forename: H A
authors.initials: HA
authors.lastname: Raja
authors.forename: C A
authors.initials: CA
authors.lastname: Shearer
mesh_terms: D001203:Ascomycota / Q000145:classification* / Q000302:isolation & purification / Q000502:physiology / Q000648:ultrastructure; D002489:Central America; D005618:Fresh Water / Q000382:microbiology*; D025301:Hyphae / Q000648:ultrastructure; D009656:North America; D013045:Species Specificity; D013172:Spores, Fungal / Q000502:physiology / Q000648:ultrastructure