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Bolbitius vitellinus

Bolbitius vitellinus - Fungi species | sokos jishebi | სოკოს ჯიშები

Bolbitius vitellinus

Pileus
Cap 2-6 cm broad, conic, becoming broadly convex with age; surface smooth, viscid, yellow to bright yellow when fresh, fading to whitish or greyish; margin striate; flesh thin, very fragile.

Lamellae
Gills adnate to adnexed, close, sometimes free, yellowish, to yellowish-brown at maturity.

Stipe
Stipe 6-11 cm long, 2-5 mm thick, equal to slightly enlarged at base, hollow, fragile, pale yellow, partial veil absent.

Spores
Spores 10-14 x 6-9 µm, elliptical, smooth, with a germ pore. Spore print rusty brown.

Habitat
Scattered on grass and dung. Fruits throughout the year whenever moisture is available.

Edibility
Edible, but too small and fragile to be of any interest.

Comments
Bolbitius vitellinus is a small, yellow, attractive mushroom that is easily recognized by its viscid, striate cap, yellow brown gills, rust-brown spores, lack of a ring, and habit of growing either on dung or grass. Like many small Coprinus (s.l.) species, fruitings are ephemeral, mushrooms opening in the morning, then shriveling by the end of the day. Occasionally, unusually robust specimens are found which may persist for several days. Leucocoprinus birnbaumii, a tropical species which in the Bay Area occurs mostly in greenhouses, is similar in size and cap color but the cap is not viscid, the gills are free, there is a ring, and the spores are white.

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