Observation 180917: Agaricus arvensis Schaeff.
When: 2013-09-19
(49.45888° 75.47515° 845m)
No herbarium specimen

Notes: Agaricus arvensis Schaeff. Agaricaceae, Agaricales.
(Horse Mushroom. Шампиньон полевой. Шампиньон обыкновенный.)

Cap: 8-18cm semi-spherical with vertical sides (square head), then convex, broadly convex up to almost flattened; white, yellowish-white, bruising yellow; smooth then slightly scaly or concentric scaly; young cap bottom is covered with white veil, later cap margin sometimes has hanging veil remnants; very old cap brownish-white and rarely with some reddish scales.
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: rare small groups scattered in pine-tree forest with some deciduous trees.
Season: July – September.

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Created: 2014-09-30 09:41:11 CDT (-0500)
Last modified: 2014-09-30 09:41:21 CDT (-0500)
Viewed: 10 times, last viewed: 2017-06-18 23:19:04 CDT (-0500)
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