An acid deficient population of Lambiella psephota from Antarctica and a new combination in the genus from Campbell Island with a world-wide key to the genus

Abstract

Only two species of the lichen genus Lambiella are known from Antarctica: L. impavida and L. psephota. Here we report a new chemotype of L. psephota collected from James Ross Island in the North-East Antarctic Peninsula region. nrITS, mtSSU and RPB1 gene regions of the norstictic acid deficient L. psephota were obtained, which showed the new chemotype phylogenetically belongs to L. psephota. We also transfer Rimularia maculata to Lambiella, and provide an identification key of the 17 known species of Lambiella world-wide