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| The families of mushrooms and toadstools represented in Britain and Ireland |
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.
Representation in Britain and Ireland. 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. TULASNELLACEAE. 1, Tulasnella allantospora; 2, Tulasnella violea.
We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa. See also Guidelines for using data taken from Web publications.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2008 onwards. The families of mushrooms and toadstools represented in Britain and Ireland. Version: 5th August 2019. delta-intkey.com’.
