The genus Rosellinia (Xylariaceae) in Guadeloupe and Martinique (French West Indies)
20 Nov 2017 - By Fournier J., Lechat C., Courtecuisse R., Moreau P.A.
Abstract: This survey deals with the Rosellinia taxa collected in the French West Indies in the course of an ongoing inventorial work on the mycobiota of these islands initiated in 2003. Based on the evaluation and comparison of their morphological characters, sixteen species are described, illustrated and discussed, including seven new taxa viz.: R. aciculispora, R. asperata var. minor, R. discreta, R. granulosa, R. heliconiae, R. nigropileata and R. truncatispora, and two taxonomically unsettled species provisionally referred to R. acutispora and R. perusensis. Other known recorded taxa include R. bunodes, R. lechatii, R. leopoldensis, R. longispora, R. parva, R. pepo and R. winckleriana. A seventeenth species, R. arcuata, known from Guadeloupe, was not collected during this survey and therefore is cited but not illustrated. A dichotomous identification key and a synoptical table of stromata are provided. Living cultures and ITS sequences of R. cf. acutispora, R. asperata var. minor and R. truncatispora were deposited at Westerdijk Fungal Biodiversity Institute (formerly CBS) and GenBank respectively. The phylogenetic analysis of ITS sequences supports the placement of these species in Rosellinia and their affinities with morphologically similar species
Content: This survey of Rosellinia De Not. in the French Caribbean islands of Guadeloupe and Martinique comes after three similar studies carried out on Hypoxylon Bull., Annulohypoxylon Y.-M. Ju, J.D. Rogers & H.-M. Hsieh and Biscogniauxia Kuntze in the same region (Fournier et al., 2015; 2016; 2017). The reader is referred to the former publication for details [...]
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