Trematodon perssoniorum P.Allorge & Thér. ex V.Allorge (1951)



Taxonomy & Nomenclature

Synonym/s: Trematodon perssonorum P.Allorge & Thér. ex V.Allorge [original spelling, corrected to perssoniorum by (Hill et al., 2006:232)]


Conservation Status

Rediscovered (source)

IUCN RedList status: Critically Endangered


Has been reported at least three times since the original description according to (Gabriel, 2019), but was rediscovered post-2000 according to an unidentified source



São Miguel, Azores, Macaronesia


Biology & Ecology









Original scientific description:

Allorge, V. (1951). Trematodon perssonorum Allorge et Theriot espèce nouvelle des Açores. Révue Bryologique et Lichénologique 20: 179-181.


Other references:

Allorge, P. and Persson, H. (1938). Mousses nouvelles pour les Açores. Le Monde des Plantes 39(232): 25-26.

European Committee for the Conservation of Bryophytes. (1995). Red Databook of European Bryophytes. Trindheim: European Committee for the Conservation of European Bryophytes. 291 pp.

Gabriel, R. (2019). Trematodon perssoniorum. The IUCN Red List of Threatened Species 2019: e.T84535274A87712651. Accessed on 11 April 2022.

Gabriel, R., Sjögren, E., Schumacker, R., Sérgio, C., Aranda, S. C., Claro, D., Homem, N. and Martins, B. (2010). List of bryophytes (Anthocerotophyta, Marchantiophyta, Bryophyta). In: P.A.V. Borges, A. Costa, R. Cunha, R. Gabriel, V. Gonçalves, A.F. Martins, I. Melo, M. Parente, P. Raposeiro, P. Rodrigues, R.S. Santos, L. Silva, P. Vieira and V. Vieira (eds), A list of the terrestrial and marine fungi, flora and fauna from the Azores, pp. 99-115. Princípia, Cascais.

Hill, M. O. et al. (2006). An annotated checklist of the mosses of Europe and Macaronesia. Journal of Bryology 28: 198-267.

Hodgetts, N. G. (2015). Checklist and country status of European bryophytes – towards a new Red List for Europe. Irish Wildlife Manuals, No. 84. National Parks and Wildlife Service, Department of the Arts, Heritage and the Gaeltacht, Ireland.

Hodgetts, N. G. and Lockhart, N. (2020). Checklist and country status of European bryophytes – update 2020. – Irish Wildlife Manuals 123. – Dublin: Department of Culture, Heritage and the Gaeltacht.

Hodgetts, N. G. et al. (2020). An annotated checklist of bryophytes of Europe, Macaronesia and Cyprus. Journal of Bryology 42(1): 1-116.

Ros, Rosa M. et al. (2013). Mosses of the Mediterranean, an Annotated Checklist. Cryptogamie, Bryologie 34(2): 99-283.

Schwab, G. (1981). Azoren. Herbar Gottfried Schwab. Senckenherg.

Sjögren, E. (2004). List of species in Herbario UPSV collected in the Azores Islands - Part 1. Uppsala.

Vanderpoorten, A., Laenen, B., Gabriel, R., Gonzalez-Mancebo, J. M., Rumsey, F. J. and Carine, M. A. (2011). Dispersal, Diversity and Evolution of the Macaronesian Cryptogamic Floras, pp. 338-364. In: Bramwell, D. and Caujapé-Castells, J. (eds.). The Biology of Island Floras. Cambridge: Cambridge University Press.

von Hübschmann, A. (1974). Bryologische Studien auf der Azoreninsel São Miguel. Revista da Faculdade de Ciências de Lisboa, Série 2.C 17: 627-702.


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