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Rubroboletus rhodoxanthus
''Rubroboletus rhodoxanthus'' is a fungus of the genus ''Rubroboletus'', known for many years as ''Boletus rhodoxanthus'' until 2014. It is a rare, inedible bolete found in warm deciduous forests of southern Europe mainly under oak and beech, on chalky soil.
==Description==
''Rubroboletus rhodoxanthus'' produces a large, colourful fruit body. The cap is convex, coloured mostly whitish-grey, and flushed with pink especially towards the margin. The cap expands with maturity and may exceed 20 cm in diameter. The tubes are initially yellow in immature specimens, soon becoming bright red, and stain blue when damaged.
The stem is bulbous when young, but becomes more slender with maturity. It bears a dense carmine network covering an orange-yellow background. The flesh is bright yellow, turning blue when cut but only in the cap and not in the stem base. It has a mild taste.
The spores are olive-brown in colour, ellipsoid to spindle shaped, sized 10–15 by 4–5.5 μm.
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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