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Clitocybe dealbata

Clitocybe dealbata - Fungi species | sokos jishebi | სოკოს ჯიშები

Clitocybe dealbata

Pileus
Cap 2.0-4.0 cm broad, shallowly convex in youth, expanding to nearly plane with a slightly depressed to umbonate disc; margin incurved, then decurved to occasionally raised in age; surface canescent, white, ashy-grey to greyish-tan; streaked or water-spotted at maturity; context thin, 3.0-4.0 mm thick at the disc, 1-2 mm at the margin; context soft, cream-buff, unchanging; odor mild; taste mild to slightly astringent with time.

Lamellae
Gills adnate at first, subdecurrent in age, close, cream-buff, becoming tan, relatively narrow; lamellulae in three to four series.

Stipe
Stipe 2.0-4.0 cm long, 4.0-8.0 mm thick, equal to enlarged at the apex, straight or curved, solid in youth, eventually hollow, often flattened in cross section, not leathery or tough; surface appressed fibrillose, pallid, darkening where handled; partial veil absent.

Spores
Spores 4.0-5.0 x 2.0-3.0 µm, smooth, thin-walled, elliptical-oblong in face-view, elliptical and inequilateral in profile, hilar appendage well-developed, inamyloid; spores white in deposit.

Habitat
In arcs and rings in grasslands and pastures; fruiting from late fall to mid-winter; infrequent to occasionally common.

Edibility
Toxic; contains muscarine.

Comments
Clitocybe dealbata is a toxic look-alike of the edible Fairy-Ring Mushroom, Marasmius oreades. Both occur in grass and are similar in size. Marasmius oreades differs, however, in having a uniform, buff to tan-colored cap, not pale-grey and streaked, more widely spaced adnexed to adnate gills as opposed to subdecurrent, and a leathery, tough stipe. Additionally, fruiting bodies of Marasmius oreades revive after drying, a feature absent in Clitocybe dealbata. Two subspecies and several varieties have been described, an indication of its variability. Here it is treated as a single species.

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