| Leccinum cyaneobasileucum fo. brunneogriseolum (Lannoy & Estadès) Lannoy & Estadès |
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New classification: Basidiomycota/Agaricomycotina/Agaricomycetes/Agaricomycetidae/Boletales/Boletaceae Former classification: Basidiomycota/Homobasidiomycetes/Agaricomycetideae/Boletales/Boletaceae synonyms: Leccinum brunneogriseolum edibility : unknown edibility
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The cap is hazel to buff-brown to grey-brown, fleshy, hemispherical at first, then convex. The cap surface is downy to silky, tacky in wet weather. The cap margin is slightly overhanging the tubes. The stem is full, long and firm to tough, rough because of the small scales covering it, these being pale for a long time, whitish to greyish in colour. The stem's surface background colour is white, often stained with blue-green spots at its base (and at least in the flesh). The flesh is thick, white. It turns slightly pink, or green-blue to blue (South Seas blue) in the stem base when cut and exposed to air, ; its taste is faint and mild; the odour is weak and pleasant; The tubes are free, thin. They are whitish then cream-brown. The pores are small, round, white then cream-brown, not turning blue when pressed. The spore print is walnut-brown. It grows in broad-leaved woods, mostly with birch. The fruiting period takes place from July to November.
Chemical tests : The flesh becomes : olive-green when in contact with iron sulphate, pink when in contact with formaldehyde. Distinctive features : light brown, silky-velvety cap; white, tough stem, covered with whitish to greyish scales remaining pale for a long time; blue-green stains at stem base; with birch Leccinum cyaneobasileucum fo. brunneogriseolum is quite rare and scattered in the forest of Rambouillet, and is occasional, more generally speaking . | ||
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page updated on 14/01/18