The Families of Mushrooms and Toadstools Represented in the British Isles

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L. Watson and M. J. Dallwitz

Xenasmataceae

Morphology. The fruit-bodies producing basidia and basidiospores; persistent; flattened and more or less appressed to the substrate or encrusting, with the hymenium on the outside (resupinate, waxy). The hymenium smooth. The hymenial layer not readily separable from the supporting flesh. Cystidia present; leptocystidia. Hyphidia represented by dichohyphidia (skeletohyphidia and dendrohyphidia absent). The basidia ‘unmodified’. The basidiospores mostly amyloid.

The hyphal walls lamellate, with a thin, electron-dense outer layer and a relatively thick, electron-transparent inner layer. The hyphae monomitic.

Chemical reactions. The context hyphae not xanthochroic.

British representation. About 20 species in Britain (mostly in Phlebiella); Lepidomyces, Phlebiella, Xenasma, Xenosperma.

World representation. 56 species; genera 6. Europe, North America.

Classification. Basidiomycota; Basidiomycetes; Agaricomycetidae; Polyporales (formerly Stereales).

Comments. “Basidia pleural”.


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Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2008 onwards. The families of mushrooms and toadstools represented in the British Isles. Version: 6th March 2015. delta-intkey.com’.

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