The Families of Mushrooms and Toadstools Represented in the British Isles

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L. Watson and M. J. Dallwitz

Tulasnellaceae

Anamorphic forms occurring (Epulorhiza).

Morphology. The fruit-bodies producing basidia and basidiospores; fairly persistent; flattened and more or less appressed to the substrate or encrusting, with the hymenium on the outside (thin, waxy to subgelatinous); of indeterminate shape and size; gelatinous and somewhat translucent when moist to not noticeably gelatinous when moist (somewhat gelatinized or membranous); brightly pigmented to not brightly pigmented; white or whitish, or lilac, or grey. The basidia ‘modified’; partially longitudinally quadripartite at the apex (the probasidium developing a tetrad of lachrymoid epibasidia, each with a terminal sterigma); ostensibly 4-sterigmate. The basidiospores subglobose, ellipsoid, allantoid to helicoid; hyaline; smooth; inamyloid.

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

Chemical reactions. The context hyphae not xanthochroic (?).

Ecology. Saprophytic. The fruit-bodies borne on the ground (humicolous), or on dead wood; often on dead trees and fallen logs.

British representation. About 30 species in Britain; Tulasnella.

World representation. 47 species; genera 2. “Widespread”.

Classification. Basidiomycota; Basidiomycetes; Tremellomycetidae; Tulasnellales.

Comments. Secondary spores common.

Illustrations. • Tulasnella allantospora and T. violea.


To view the illustrations with captions giving names in current use, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, distributions of character states within any set of taxa, source references, and other relevant material.

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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