You are here
Family: GeastraceaeGenus: Geastrum
Anamorph: not known.
Teleomorph: basidioma 1.5-3 cm diam. when expanded; endoperidium 6–12(-16) mm diam., pale grey-brown and covered in whitish-grey crystalline pruina when fresh, subglobose; peristome fimbriate/fibrillose, delimited with a weak groove; columella whitish, cylindric/clavate, may be poorly defined; mature gleba brown; pseudoparenchymatous layer pale when young, growing darker and splitting with age, may form a collar around the stalk; stalk brown, 1 mm tall; exoperidium splitting into 6-10 arching rays; not fornicate (i.e. the fruitbody is not elevated by arching rays to the extent of separation of its base from the mycelial layer below); mycelial layer persistent and encrusting debris; capillitial hyphae yellow-brown, 3-6 µm diam., thick-walled, tapering towards tips, irregularly encrusted, sometimes forked. Basidiospores dark brown, globose, 5-6 µm diam. excluding ornamentation, 5.5-7.5 including; spore ornamentation irregular, composed of coarse verruculae 0.4-0.7 µm tall and 2 µm diam. Fruiting bodies often found in groups.