Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Leptogium marginellum
liquen de piel gelatinosa, Jellyskin lichen, vinyl lichen
Thallus dark gray to brownish gray when dry, olive brown when wet, foliose, loosely attached, moderately thin; outline irregular; lobes distinct, undulate, ± spreading; surface densely folded (plicate), dull; isidia numerous, granular to elongate phyllidiate, typically coronate-phyllidiate along the apothecial margin, rarely also in granular-coralloid clusters on the thallus surface; apothecia numerous, laminal, abundant across the thallus, sessile to distinctly stalked, globose; disk pale to deep reddish brown, urceolate, becoming concave to flattened; margin lecanorine, initially pale whitish or skincolored, densely covered with blackish gray isidia (i.e., with a corona of several rows of granular to elongate phyllidiate isidia), with a broad paraplectenchymatous thalline exciple, a thin prosoplectenchymatous proper exciple, and a considerably thickened hymenium of mostly sterile paraphyses and few abortive asci; ascospores rarely developed, not seen (in Galapagos material).
With its coronate granular-phyllidiate apothecia it cannot be easily confused with any other Galapagos species.
Domain
Eukaryota
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Peltigerales
Family
Collemataceae
Genus
Leptogium
Species
marginellum
Taxon category: Accepted
Origin: Native
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: One of the most common species of Leptogium in the Galapagos; a very common epiphyte, also often on wood, plant debris, and occasionally even on soil (humus); throughout the moist uplands, in all vegetation zones from the upper transition zone to the humid highlands.
- Bungartz, F. (2008) Cyanolichens of the Galapagos Islands - The genera Collema and Leptogium. Sauteria 15: 139-158.
- Dodge, C.W. (1936) Lichens of the G. Allan Hancock Expedition of 1934, collected by Wm. R. Taylor. Hancock Pacific Expeditions 3(3): 33-46.
- Elix, J.A. McCarthy, P.M. (1998) Catalogue of the Lichens of the Smaller Pacific Islands. Bibliotheca Lichenologica 70, J. Cramer, Berlin, Stuttgart, 361pp.
- LeDee, O.E. (2000) unpublished undergraduate student project
- Weber, W.A. (1986) The Lichen Flora of the Galápagos Islands, Ecuador. Mycotaxon 27: 451-497.
- 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.
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This page should be cited as follows:
"Galapagos Species Database, Leptogium marginellum", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=2953. Accessed 1 November 2026.