The genus Camillea (Xylariales) in Argentina’s Yungas: a comprehensive morphological study with two new species and identification key

Abstract

From an exhaustive taxonomic survey of Xylariales carried out in the subtropical montane forest of the Argentine northwest (“Las Yungas”), a first comprehensive revision of Camillea for the country is presented. Based on a new combination of sexual and asexual morphology, C. hladkiae and C. romeroae are proposed as new species for the genus; C. hladkiae is principally distinguished by its conidiogenous structure from similar species such as C. guzmanii and C. magnifica. On the other hand, C. romeroae is mainly differentiated from other known species of Camillea by the ornamentation of the ascospores under SEM. Additionally, the conidiogenous structure of C. coroniformis, C. flosculosa, C. hainesii, C. hyalospora and C. signata are described and illustrated for the first time. Furthermore, four species reports are new for the Southern Cone of South America (C. coroniformis, C. hainesii, C. hyalospora and C. signata) and three are a novelty for Argentine Yunga (C. flosculosa, C. obularia and C. punctulata). Finally, full descriptions, illustrations of all species and a dichotomous key to the identification of Camillea species for the region are provided.