Resumo

LUCKING, Robert; DAL-FORNO, Manuela; WILK, Karina  e  LAWREY, James D.. Three new species of Dictyonema (lichenized Basidiomycota: Hygrophoraceae) from Bolivia. RevActaNova. [online]. 2013, vol.6, n.1-2, pp.4-16. ISSN 1683-0789.

Based on molecular phylogenetic studies and morphological revision, three new species of Dictyonema are described from Bolivia. Dictyonema applanatum Lücking, Dal-Forno & Wilk is characterized by an appressed filamentous thallus in which the fibrils are completely horizontally oriented and partially embedded in a gelatinous matrix formed by the thick generative hyphae of the mycobiont. Dictyonema hapteriferum Lücking, Dal-Forno & Wilk, also known from Peru, is a shelf-like species similar in growth to D. sericeum and characterized by loosely horizontally arranged fibrils and small hymenophores on the underside that resemble hapteres found in some lichens. Dictyonema discocarpum Lücking, Dal-Forno & Wilk also resembles D. sericeum in the shelf-like growth and produces more or less disc-shaped hymenophores with crisp margins.

Palavras-chave : Cora; ITS barcoding gene; species delimitation.

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