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 Add this item to the list   Gloiothele Bres.
   
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Page number:54 
Remarks (internal):The generic description for Gloiothele was terse: "Est Grammothele gloeocystidiis praedita" [A Grammothele with gloeocystidia]. Only one species was included, but Bresadola described it in detail. The genus was essentially forgotten until Hjortstam (1987b), after studying the type specimen at S, reduced the name Poria lamellosa to synonymy under Gloiothele lactescens, commonly known as Gloeocystidiellum lactescens. Hjortstam also transferred G. turpe to Gloiothele and suggested that five other species appeared similar enough to be included in the genus, including the North American Gloeocystidiellum tropicalis.
When the genus Vesiculomyces was proposed the combination of characters distinguishing it were the sulfo-negative gloeocystidia, the absence of clamp connections, the almost spherical, smooth, amyloid basidiospores and the long, narrow basidia. Only one species was included. Boidin and Lanquetin (1983) characterized the genus as Gloeocystidiellum with a monomitic hyphal system, with smooth, amyloid spores, with sulfo-positive, typically "riche" (?distinctive and oily) gloeocystidia, with or without clamp connections, with acyanophilous hyphae, and with normal basidia, i.e., not repeating as in Conferticium. They observed that the gloeocystidia in the basidiomes were typically empty and thus sulfo-negative, whereas in vitro the gloeocystidia were sulfo-positive. Boidin and Lanquetin added seven species to Vesiculomyces: Corticium chelodonium Pat., V. epitheloides Boidin, Lanquetin & Gilles, Gloeocystidiellum humilis Boidin, C. lactescens Berk., C. leucoxanthum Bres., C. luridum Bres., and C. sulcatus Rehill & Bakshi.
Current status The circumscription of Gloiothele has been that of the type species. However, we believe the features of the four species included herein in Gloiothele indicate that the principal features distinguishing the genus in the Gloeocystidiellaceae are the unusually wide, broadly ellipsoid to subglobose spores with smooth, hyaline, amyloid in a mottled pattern walls with a prominent apiculus, the narrow, acyanophilous, simple septate hyphae and the hyphidia (although lacking in the two known collections of G. turpis). The apiculus differs from those in the other genera treated here. Its sides are curved so that it molds into the outline of the spore and it is relatively broad. The hyphidia (paraphysoid hyphae) are numerous in most but not all specimens of the type species, and are uncommon to lacking in the other species. Gloiothele in North America contains four species, G. citrina, G. lactescens, G. tropically. and G. turpis.
 
Description type:Non-original description 
Description:Gloiothele Bres.
Ann. Mycol. 18:44, 1921.
Type species Poria lamellosa Henn.
? Vesiculomyces E. Hagstr., Bot. Not. 130: 53, 1977; emend. Boidin and Lanquetin, Mycotaxon 16: 493, 1983.
Type species Thelephora citrina Pers.
Basidiomes effuse, typically several cm long and broad, thin to 0.5 mm thick, crustose to membranous, in age sometimes deeply fissured, pale yellow, yellow, buff, pallid to tan, lignicolous or corticolous. Hymenial surface smooth, but conforming to the topography of the substrate. Subiculum pallid to white, thin, dense. Hyphal system monomitic. Generative hyphae typically arranged in a narrow layer parallel to and adjacent to the substrate, loosely woven to rather compact, then becoming perpendicular to the substrate and slightly woven between the gloeocystidia and developing hymenium, lacking clamp connections, 2-6 µm diam, the walls hyaline, thin or moderately thickened in some species, nonamyloid, acyanophilous. Gloeocystidia cylindrical to lageniform, sinuous, typically 40-300 x 5-20 µm; the walls hyaline, thin; the contents oily to granular and pale yellow in KOH, sulfo-positive or sulfo-negative. Hyphidia present in all species except one, numerous to rare, filiform, 2-3 µm diam. Basidia cylindrical to clavate, about 27-75 x 4-12 µm with four sterigmata. Basidiospores broadly ellipsoid to globose, 5.5-9 x 5-7 µm, the walls hyaline, thin to slightly thickened, amyloid with the amyloididity mottling the inner surface of the wall, with a distinct, tapering apiculus.
 
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