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''Catathelasma imperiale'' is a large species of mushroom in the Tricholomataceae family. It is found in North America and Europe.〔 ==Description== The following description combines several references.〔〔〔〔〔〔 *Cap: 8 - 40 cm, orange brown to hazel brown, with darker patches. Often remaining closed up with a domed shape, but sometimes expanding and finally depressed. *Gills: Whitish, decurrent, crowded, sometimes forked. *Stem: Pale brown with two rings. Tapering below, often partly buried. *Odor: Of flour,〔〔〔 cucumber〔〔 or unripe melon skin.〔 *Spores: White (en masse), 10 - 15 x 5 - 6 µm,〔 smooth, somewhat spindle-shaped, amyloid. *Habitat: Under conifers, especially Pine and Spruce, in mountainous regions. European sources give the cap size as up to about 20 cm,〔〔〔〔 while North American ones indicate an enormous maximum size of 40 cm.〔〔 The upper ring is derived from the partial veil (which covered the lower surface of the cap before it opened), whereas the thinner lower ring originally formed part of the universal veil (which enveloped the whole mushroom).〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Catathelasma imperiale」の詳細全文を読む スポンサード リンク
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