User:Petru Damsa/Agaricus dulcidulus

Agaricus dulcidulus is a small sized mushroom belonging to the Agaricales order, family Agaricaceae, growing in deciduous woodlands of Europe, but also recorded in North America, North Africa and Asia.The english name is Rosy Wood Mushroom. Despite the tendance of some sources to synonimize it with Agaricus semotus, this is a separate recognized taxon.

Taxonomic synonymy
Agaricus purpurellus (F.H. Møller) F.H. Møller

Agaricus rubelloides Bon

Agaricus rubellus (Gillet) Sacc.

Fungus dulcidulus (Schulzer) Kuntze

Pratella rubella Gillet

''Pratella silvatica var. rubella (Gillet) L. Corb.''

''Psalliota amethystina sensu Lange [Fl. Ag. Dan. 4: 61 &; pl. 135A (1939)]''

Psalliota pallens (J.E. Lange) Rea

Psalliota purpurella F.H. Møller

Psalliota rubella (Gillet) Rea

Psalliota rubella f. pallens J.E. Lange

''Psalliota semota sensu NCL (1960) and sensu auct. mult.''

Description
cap 2 to 7 cm, convex-rounded often with infexed margins at first, then flattens when aging, covered in purple-brown to pinkish dense fibriles that fade in colours towards light grayish-pink from the centre towards margins.

Gills are free, dense, starting pale gray-brownish when young, then turning dark purple-brown with age, with a lighter crenulated edge.

Stipe is cylindrical, 2 to 5 cm long and 0.4 - 0.8 cm broad, bulbous or clavated at the base, withish, slightly darkening toward the base in yellow-brownish tints. The ring, remanant of the veil present in young fructifications, is whitish,descendent, thin and fragile.

The spore print is dark brownish.

The spores are 4.5–6.0 x 3.5–4.0 µm on average, nonamyloid, and elliptical.

Flesh turns slightly in yellow when cut or bruised, sometime with orange tints in stipe.

Macrochemical reactions: flesh turns orange and pileus turns yellow in contact with KOH 10%.

Odor and taste resembles the almonds.

Other taxonomic considerations
Several charactheristics like flesh yellowing on contact or in air, orange reaction with KOH, overall size, puts this specie within Minores section of the genus Agaricus, along with Agaricus comtulus, Agaricus xantholepis, Agaricus porphyrizon and Agaricus luteomaculatus.

Habitat
Agaricus dulcidulus is a mycorrhizal specie in close relation with different oak species. Prefers humid soil with rich decomposed leaves substrat. The basidiocarps apear, depending on microclimatic conditions, in late july to early october.

Edibility
Although considered to be edible, the small size and usually the sporadic presence prevents it to be largely used in gastronomical fields.