Galapagos Species Database

Taxon category: Accepted

F. Bungartz: according to Weber (1986 p. 478) the type of this species designated by Zahlbruckner (Ann. Mycol. 29:86. 1831) is deposited in Vienna (Floreana, Post Office Bay, Herre s.n.; W). Weber (1986) cites several specimens in COLO that he considers identical with Zahlbruckner's original description [L-40343, COLO 188855 (erroneously as L-30434); L-40198, COLO 189935; L-40389, COLO 188941; and L-40449, COLO 193411]. He emphasizes that he therefore disagrees with Thompson (1963 p. 14) who, based on Zahlbruckner, Krypt. Exs. no. 3170, suggested that the species, contrary to Zahlbruckner's protologue is not sorediate, but fertile. Weber correctly points out that the exsiccate specimens must not necessarily be considered identical with Zahlbruckner's type and he further suggest that the exsiccate might even be a mixture of both P. insularis and P. mexicana. It is not clear from the text in Weber (1986 p. 478), however, if Weber has actually seen the type material himself, but he annotated one specimen (L-40343, COLO 188855) as " p.p.; exactly matching the type"; as originally suggested the species is possibly a Galapagos endemic.

Origin: Endemic

• Elix, J.A. McCarthy, P.M. (1998) Catalogue of the Lichens of the Smaller Pacific Islands. Bibliotheca Lichenologica 70, J. Cramer, Berlin, Stuttgart, 361pp.
• Thomson, J.W. The Lichen Genus Physcia in North America (1963) Beihefte zur Nova Hedwigia 7:1-172
• Weber, W.A. (1966) Lichenology and Bryology in the Galápagos Islands, with Check Lists of the Lichens and Bryophytes Thus Far Reported. In: Bowman, R.I. (ed.): The Galápagos. Proceedings of the Symposium of the Galápagos International Scientific Project, University of California Press, Berkeley, p. 197-200.
• Weber, W.A. (1986) The Lichen Flora of the Galápagos Islands, Ecuador. Mycotaxon 27: 451-497.