Tuesday, March 10, 2009

Clitocybe Nebularis

By Harold Hartford

Clitocybe nebularis is one of the sturdiest representatives of its genus. It is readily identified by its loudy whitish cap, whose surface has a slight ashp:ey bloom, and by its sharp aromatic distinctive men, reminiscent of soap. It grows gregariously in different types of woods and even outside them.

The stipe always lacks a ring and it was therefove formerly classified as a member of the independent Amanitopsis genus. The colour of its cap is changeable, but a typical Grisette has a grey cap on a whitish stipe and volva. The fruit- bodies with an orange or orange-brown or sometimes a slightly olive tinged cap are classified as Amanita crocea. Their stipes are similarly coloured and are characterized by transverse broken lines.

Clitocybe clavipes is similar in shape to Clitocybe nebularis, but is smaller and the shades of brown, black or olive-green which characterize the cap also lack the distinctive bloom. Its stipe is very pongy and club-shaped near the base. Its mycelium becomes firmly embedded in needles, moss and leaves, so that when the fruit-body is pulled out, a part of this base comes out with the stipe.

Edible mushrooms can be found not only in forests, but also in meadows, pastures and on grassy slopes. Blewits are among the most substantial and tasty. They even attract the inexperienced eye because they often grow in circles in patches of dark green grass, which ate a strikingly deeper green than the rest of the sward. A similar phenomenon may be observed in the Fairy-ring champignon (Marasmius oreades) and is due to the production of nitrogen, which enriches the soil and provides additional nourishment for green plants. This is one example of the symbiosis of certain fungus mycelia and adjacent green plants.

The flesh of the Sulphur tuft is a bright yellow and has a repulsive bitter taste, whilst that of Hy sublateritium is a dirty white with a rust-coloured tinge at the base of the stipe and it has only a slight bitter taste. The former species has sulphur-yellow, later greenish gills, while in the latter species the gills are pale yellow, later turning to an olive- brown. When the mushrooms mature the gills of both species turn purple-black or chocolate-brown as a result of the colour of the ripe spores.

In calm weather conditions it is possible to smell the scent of Clitocybe adorn at a distance of several metres away, especially when several specimens arc growing together in one spot. This species is edible and best utilized when added to mixtures of other, less aromatic mushrooms. It grows predominantly in spruce forests amongst rotting needles. It loses its typical scent when it is dried out. - 2368

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