Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Dyplolabia afzelii
liquen de escritura, Powdered script lichen
Thallus thin, inconspicuous, almost entirely embedded in the substrate, of the same color as the substrate or slightly darker, ochraceous, olive to deep brown; surface smooth, not pruinose; Apothecia prominent to sessile, lirellate; lirellae elongate, broad; labia black, but entirely covered by a thick, white, C+ red pruina (lecanoric acid); disc concealed, a thin slit; exciple laterally strongly carbonized, ±open below; hymenium hyaline, clear (not inspers), I–; ascospores hyaline, I–, 8 per ascus, short and broad, narrowly ellipsoid to broadly fusiform, 16-22 x 7-10 µm, transversely septate, 4-celled Chemistry: Apothecial pruina C+ red; lecanoric acid.
Some records in Weber (1986) are misidentifications of Helminthocarpon leprevostii, a species that is very common throughout the Galapagos dry lowlands, but one specimen collected by Pike (ID 37-18) is confirmed here as D. afzelii. This conspicuous species has since not been re-discovered and must be presumed extinct from the archipelago.
Domain
Eukaryota
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Ostropales
Family
Graphidaceae
Genus
Dyplolabia
Species
afzelii
Taxon category: Accepted
Syn.: Graphis afzelii
Taxon origin: Native
- Weber, W.A. (1986) The Lichen Flora of the Galápagos Islands, Ecuador. Mycotaxon 27: 451-497.
- Bungartz, F. Lücking, R. & Aptroot, A. (2009) The lichen family Graphidaceae (Ostropales, Lecanoromycetes) in the Galapagos Islands. Nova Hedwigia 90: 1-44.