Gyroporus cyanescens
Cornflowers Boletus ( Gyroporus cyanescens )
The cornflowers Boletus ( Gyroporus cyanescens ) is a very rare, edible mushroom tube from the kind of Blasssporröhrlinge. At the touched spot he runs in a short time at strong cornflower blue, which explains its German name.
- 4.1 dye
- 4.2 edibility
- 5.1 Literature
- 5.2 Notes and references
Features
Macroscopic characteristics
The hat of the cornflower Röhrlings is about 5-10 cm wide, whitish to pale yellowish with a dry, coarse felt-like hat skin. The pores of the fungus are bulged at the stem and whitish to pale yellowish. The stem is colored like the hat, usually chambered and hollow in old age. The flesh is pale, soft and brittle and discolored at the slightest injury immediately cornflower blue. The spore powder is pale yellowish.
Microscopic characteristics
The spores are smooth, irregularly elliptical, 9-10.5 × 5-6 micrometers in size.
Artabgrenzung
The confusion is hardly possible because of the intense cornflower blue tarnishing. The related hares Boletus ( Gyroporus castaneus ) is colored for several cinnamon and not turns blue.
Ecology and phenology
The cornflower Röhrling comes on sandy soils in deciduous and coniferous forests, especially in front of birches, beeches and oaks. It usually takes him on or directly on the forest paths, but it lacks in some areas. It forms mycorrhiza like all Blasssporröhrlinge. The fruit bodies grow from June to September, leading discoveries can already occur in May.
Importance
Dye
The responsible for the blue of the meat in contact with atmospheric oxygen Gyrocyanin substance is a derivative of Pulvinsäure. The Gyrocyanin and Gyroporin also contained in the fruiting bodies oxidized to quinones blue. On the rare variant lacteus who is responsible for the discoloration of fabric is missing.
Feed value
When it comes to food value, its taste is similar to that of wild mushrooms. It is suitable for braising, where his flesh loses the cornflower blue color for touch and beautiful again is whitish to pale yellow, as well as for drying or freezing.