Sticta viviana(lichenized Ascomycota:Peltigerales:Lobariaceae), a new species from Colombian paramos

Abstract

AbstractThe new speciesSticta vivianaA. Suárez & Lücking is described from Colombian paramos. It superficially resemblesS. fuliginosas. str. but differs by the small lobes with a shiny surface, the strongly branched, corymbose isidia, the dark lower tomentum, the smaller, usually sessile and urceolate cyphellae with one papilla-like outgrowth per cell of the basal membrane, and the K+ orange-yellow medulla. In contrast,Sticta fuliginosas. str., as represented by the type material, a sequenced topotype, and specimens from North America and Colombia falling into the same clade, is defined by an uneven lobe surface, simple to branched but not corymbose isidia, a pale lower tomentum, larger, immersed to erumpent cyphellae, with each cell of the basal membrane having 2–4 papillae, and a K− medulla. The new species is not closely related toS. fuliginosas. str. but falls within a clade of several, as yet undescribed, species withS. fuliginosagross morphology.