Literature

• Gradstein, S.R. (2009) Annotated catalogue of the liverworts and hornworts of the Galápagos Islands. Bibliotheca Lichenologica: Biodiversity and ecology of lichens - Liber Amicorum Harrie Sipman 99: 143-162.
• León-Yánez, S., Gradstein, S.R., Wegner, C. (2006) Hepáticas (Marchantiophyta) y Antoceros (Anthocerotophyta) del Ecuador, catálogo. Pontificia Universidad Católica del Ecuador, Quito, 101 pp.
• Yamada, K., Gradstein, S.R. (1991) The Genus Radula (Hepaticae) in the Galapagos Islands. Tropical Bryology 4: 63-68.