title: Corticolous species of Trichothelium (Ascomycota: Porinaceae).
abstract: A survey of corticolous crustose lichen collections in connection with the Flora Neotropica project revealed a number of undescribed species of Trichothelium. While a few typically foliicolous taxa may occasionally be found on bark, five species seem to be exclusively corticolous, all with a Trentepohlia photobiont. Three of them are new species: T. angustisporum, T. caudatum, and T. kalbii spp. nov. A key is provided to all five corticolous species, accompanied by data on their distribution and ecology. A considerable range extension is reported for T. horridulum, with new collections from Costa Rica and north-eastern Brazil.
authors.affiliation: Department of Botany, Field Museum, 1400 South Lake Shore Drive, Chicago, IL 60605-2496, USA. rlucking@fieldmuseum.org
authors.forename: Robert
authors.initials: R
authors.lastname: Lücking
authors.forename: Marcela
authors.initials: M
authors.lastname: Cáceres
mesh_terms: D001203:Ascomycota / Q000145:classification* / Q000302:isolation & purification / Q000502:physiology; D008011:Lichens / Q000145:classification* / Q000235:genetics; D013172:Spores, Fungal / Q000166:cytology*