Abstract
Phosri, C., Martin, M.P., Watling, R., Jeppson, M. & Sihanonth, P. 2009. Molecular phylogeny and re-assessment of some Scleroderma spp. Anales Jard. Bot. Madrid. 66S1: 83-91. The fungal genus Scleroderma is cosmopolitan in temperate and tropical regions and forms ectomycorrhizal associations with a wide range of forest trees. To delimit phylogenetic Scleroderma species and identification, 43 basidiomes were chosen of different geographical origins and their rDNA internal transcribed spacer (ITS) were sequenced. Phylogenetic analyses of these sequences together with additional GenBank sequences identified 11 taxa. A strong phylogenetic pattern was observed related to a character of their basidiospore ornamentation.
Highlights
Scleroderma was first introduced by Persoon (1801) with 11 species
Two units need to be reassessed in the future, a species close to S. bovista as understood in Europe which apparently has been found in North America and which includes material identified as both S. bovista and S. septentrionale, and a sequence obtained from GenBank
The North American collections need to be carefully examined within a revision of other specimens from the Great Lakes region but this is something outside the scope of this present study
Summary
Scleroderma was first introduced by Persoon (1801) with 11 species. Respectively are considered at present to represent the same species, placed in Pisolithus. This leaves a remaining six species of which S. aurantiacum Pers. Are considered the same (Guzmán, 1970), under the latter name, S. verrucosum (Vaill.) Pers. S. spadiceum Schaeff.: Pers., with this last species considered a nomen confusum (Guzmán, 1970), S. cepa Pers. S. cervinum undoubtedly is referable to the ascomycetous genus Elaphomyces (Guzmán, 1970). As presently understood Scleroderma is restricted to Persoon’s S. citrinum and S. verrucosum consortia. At least 25 species is classified within the Sclerodermataceae (Hawksworth & al., 1995; Sims & al., 1995)
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