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Scleroderma (fungus)
''Scleroderma'' is a genus of fungi, commonly known as earth balls, now known to belong to the Boletales order, in suborder Sclerodermatineae. The best known species are ''S. citrinum'' and ''S. verrucosum''. They are found worldwide.
Various members of this genus are used as inoculation symbionts to colonize and promote the growth of tree seedlings in nurseries.
The name comes from the Greek ''sclera'' meaning ''hard'' and ''derma'' meaning ''skin''.
==Description==
The peridium (outer wall), which may be smooth or warted, is very thick and tough. At maturity it splits irregularly over the upper part of the basidiocarp to reveal the dark gleba underneath. Spores are produced in small brownish-purple, pea-like bodies called peridioles that initially are outlined by wall-like aggregations of white hyphae. These peridioles disintegrate as the fruit body matures, and by the time the peridium splits open, only a powdery mass of dark spores is visible. Spores are roughly spherical in shape with warts or reticulate ornamentation, thick-walled, and brown. Species in ''Scleroderma'' are ectomycorrhizal with shrubs and trees, and have a worldwide distribution.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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