St George’s Mushroom

Calocybe gambosa

Appears in

By Roger Phillips

Published 2006

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St George’s Mushroom Calocybe gambosa (Fr.) Donk. syn. Tricholoma gambosum (Fr.) P. Kumm. syn. Tricholoma georgii (L.) Quél. syn. Lyophyllum gambosum (Fr.) Singer (illustrated 35% life size) Cap 5–15cm across, subglobose then expanding, often irregularly wavy and sometimes cracking, margin inrolled; white. Stem 20–40×10–25mm; white. Flesh white; soft; taste and smell mealy. Gills narrow, very crowded; whitish. Spores 5–6×3–4¼, elliptical. Spore print white. Habitat in pastureland or grass on roadsides and at wood edges; found traditionally on 23 April, St George’s Day, whence it gets its common name, although more frequently maturing a week or so later. Common. Edible good.