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''Amanita nehuta'', also called Maori Dust Amanita, is a species of fungus in the Amanitaceae family. It was first described by New Zealand mycologist Geoff Ridley in 1991. It occurs in New Zealand in large number. It has only a dark ring rather than a universal veil and white spores. It is found under leptospermum and Nothofagus. It grows on ground usually in late summer. Its height is 110 mm and width is 100 mm.〔Family: Pluteaceae (Amanita) and species http://www.hiddenforest.co.nz/fungi/family/pluteaceae/amanitAmanitahtm〕 ==Description== The physical description is as follows:〔(【引用サイトリンク】title=Amanita nehuta )〕 * Cap : The cap is 25 – 65 mm wide, plano-convex to plano-depressed, buff, non-viscid, with a striate margin. The volval remnants are pulverulent on the center raised into wart-like peaksor warts or radial ridges, colored pale sepiAmanita * Gills : Gills are crowded and free, measure 6 - 7 millimeters wide, and appear white to pale buff. The short gills are subtruncate. * Stem/Stipe : Its stem, or stipe, is 20 - 75 × 4 - 11 millimeters, hollow, exannulate, with a smooth to subfloccose upper stem and smooth lower stem. The surface is white, very pale buff, or very pale grayish sepia in color like the cap. The basal bulb is clavate to bulbous, 10 – 16 mm in diameter. The base has a rim or band of powdery volva, the same color as on the cap. The stem has no ring. * Spores and microscopic features : The spores measure 6.5 - 9 × 5.5 - 8 (-8.5) µm and are subglobose to broadly ellipsoid to ellipsoid and inamyloid. They are white in color. Clamps are absent at the bases of the basidia. * Flesh : The flesh is white, with a very pale area under the skin in the center. 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「Amanita nehuta」の詳細全文を読む スポンサード リンク
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