Résultat de la recherche
1 recherche sur le mot-clé 'Usnea stipitata'
trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche
Naming and describing the diversity in the Usnea cornuta aggregate (lichenized Ascomycota, Parmeliaceae) focusing on Brazilian specimens / Alice Gerlach in Plant and Fungal Systematics, vol. 65, n°2 (Année 2020)
[article]
Titre : Naming and describing the diversity in the Usnea cornuta aggregate (lichenized Ascomycota, Parmeliaceae) focusing on Brazilian specimens Type de document : texte imprimé Auteurs : Alice Gerlach, Auteur ; Rosa Mara Borges da Silveira, Auteur ; Carlos Rojas, Auteur ; Philippe Clerc, Auteur Année de publication : 2020 Article en page(s) : pp. 272-302 Langues : Anglais (eng) Catégories : [ZG] Amérique centrale
[ZG] Amérique du sud
[ZG] Brésil
[ZG] Europe
[Thèmes] Clé de détermination
[Thèmes] LichensMots-clés : systématique Usnea cornuta Usnea flabelliformis Usnea rubropallens Usnea stipitata Usnea tenuicorticata Usnea brasiliensis Usnea macaronesica Usnea subpectinata Usnea trachyclada The multispecies coalescent (MSC) comparaison d'espèce aire de répartition Résumé : "This study is a reassessment of the Usnea cornuta aggregate diversity mainly in Brazil. Based on previous multi-locus species delimitation analyses using the multispecies coalescent model (MSC), we carried out a posteriori morphological and anatomical studies. The following corticolous new species are described: Usnea arianae with norstictic or fatty or lobaric acids, convex and efflorescent soralia and a lax medulla; U. flabelliformis with protocetraric acid, fan-shaped main branches and a high medulla/cortex ratio; U. rubropallens with protocetraric acid and a faint orange cortical/subcortical pigment; U. stipitata with constictic acid, stipitate soralia and a high medulla/cortex ratio; and U. tenuicorticata with protocetraric acid, a thin cortex and a high medulla/cortex ratio. The newly described species were found to occur so far only in the Americas, except U. arianae which shows an amphi-atlantic distribution in Europe and on the American continent. Seven species already described belonging to the U. cornuta aggr. in Brazil are further treated here: Usnea boomiana with caperatic acid and large, concave soralia, new to South America; U. brasiliensis with protocetraric acid, minute and irregular soralia; U. cornuta with mainly salazinic acid and minute soralia fusing into consoralia; U. macaronesica (syn. nov.: U. subglabrata) with barbatic acid, large excavate soralia and a lax medulla; Usnea subpectinata, a so far european species resurrected from the U. cornuta synonymy, with stictic acid and numerous isidiofibrils, new to South America; and U. trachyclada with thamnolic acid and K+ bright yellow stipitate soralia. Full descriptions with morphological, anatomical and chemical features, geographical distributions, and illustrations are provided for each species along with an identification key." (source : auteurs) Type de publication : périodique Référence biblio : Gerlach A., Borges da Silveira R., Rojas C., Clerc P., 2020 - Naming and describing the diversity in the Usnea cornuta aggregate (lichenized Ascomycota, Parmeliaceae) focusing on Brazilian specimens. Plant and Fungal Systematics, 65 (2) : 272-302. ID PMB : 71522 DOI : 10.35535/pfsyst-2020-0024 En ligne : https://pfsyst.botany.pl/Naming-and-describing-the-diversity-in-the-Usnea-cornut [...] Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=71522
in Plant and Fungal Systematics > vol. 65, n°2 (Année 2020) . - pp. 272-302[article]Exemplaires(0)
Disponibilité aucun exemplaire