Cyathus badius Kobayasi (1937)



Taxonomy & Nomenclature



Conservation Status

Last record: 1936

Rediscovered in 2015 (da Cruz et al., 2018)



Chichijima & Hahajima, Bonin Islands (=Ogasawara Islands), Japan


The species has also been reported from China (Liu & Li, 1989) and Brazil (Cruz et al., 2012), but there are important differences between specimens from these localities which may belong to new species (Cruz et al., 2012).


Biology & Ecology











Original scientific description:

Kobayasi, Y. (1937). Fungi Austro-Japoniae et Micronesiae. II. Botanical Magazine, Tokyo 51: 797-804.

Other references:

Brodie, H. J. (1975). The bird's nest fungi. Toronto: University of Toronto Press.

Cruz, Rhudson Henrique Santos Ferreira, Barbosa, M. M. B. and Baseia, I. G. (2012). Cyathus badius and C. earlei reported from the Brazilian Atlantic rainforest. Mycotaxon 121: 365e369.

Cruz, Rhudson Henrique Santos Ferreira, Baseia, Iuri Goulart and Hosaka, Kentaro. (2018). Rediscovery of Cyathus badius, an ‘extinct’ species from the Bonin Islands, Japan. Mycoscience 59(3): 193-199.

Hosaka, K., Kobayashi, T., Castellano, M. A. and Orihara, T. (2018). The Status of Voucher Specimens of Mushroom Species Thought to Be Extinct from Japan. Bull. Natl. Mus. Nat. Sci., B 44(2): 53-66.

Liu, B. and Li, Y. M. (1989). New species, new variety and new record of the genus Cyathus from China. Acta Mycologica Sinica 8: 289-295.


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