Observation 180899: Agaricus arvensis Schaeff.

When: 2005-08-14

Collection location: Semipalatinsk surroundings forest or Semey Ormany, Kazakhstan [Click for map]

50.53° 80.21° 450m

Who: Igor (Igor_Yevdokimov)

No specimen available

Agaricus arvensis Schaeff ex Secr. Agaricaceae, Agaricales.
(Horse Mushroom. Шампиньон полевой. Шампиньон обыкновенный.)

Cap: 8-16cm semi-spherical with vertical sides (square head), then convex, broadly convex up to almost flattened; white, yellowish-white, bruising yellow; smooth then slightly scaly; young cap bottom is covered with white veil, later cap margin sometimes has hanging veil remnants.
Gills: free, very close, narrow then moderately broad or broad when old; color from white or cream-white when covered with veil, then light pink, brownish-pink, purplish-brown up to purplish-black when old.
Veil: partial veil white leaving flaring up to pendant ring or a rim as a thin ring.
Stalk: 6-12cm long, white up to yellowish-white, bruising yellow; 1.5-3cm thick, slightly enlarging down, sometimes with indistinct basal bulb; sometimes hollow with edging. Partial veil leaves a ring at upper part of stalk.
Edibility: good.
Habitat: small groups scattered in poor-wooded places of pine-tree forest.
Season: July – September.


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Created: 2014-09-30 02:55:33 PDT (-0700)
Last modified: 2014-09-30 02:58:02 PDT (-0700)
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