Published online by Cambridge University Press: 21 May 2007
The genus Xanthoparmelia (Vain.) Hale (including Neofuscelia Essl.) currently includes more than 800 species (Blanco et al. 2004, 2005), 21 of which have been recorded in the Iberian Peninsula (Llimona & Hladun 2001). During recent studies of the lichen flora of Castilla y León by the first author, a rare, loosely adnate or vagrant, terricolous Xanthoparmelia has been found at two localities in Burgos province. Although a collection (VAL-Lich 20080) from one of the localities (Fresnillo de las Dueñas) was previously reported as the American species X. vagans (Nyl.) Hale (Pérez-Ortega et al. 2002), this collection has now been redetermined as X. pseudohungarica (Gyeln.) Hale.