Practice area: created for the 303-species Hungarian mushroom inspector requirement. It is not an official examination; requirements in other countries may differ.
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Esselte's Mushroom
Esselte's Mushroom Esselte's Mushroom Esselte's Mushroom Esselte's Mushroom Esselte's Mushroom

Esselte's Mushroom

Agaricus essettei

edible marketable
  • Habitat: deciduous coniferous
  • Fruiting season: May – November
  • Cap: hemispherical flat smooth fibrous
  • Stem: cylindrical thickening bulbous
  • Fertile layer: free dense smooth

Description

Cap: Initially hemispherical, later spreading, up to 12 (14) cm wide, pure white cap with a blunt umbo. Its surface turns yellow on pressure.

Gills: Free and densely standing, whitish when young, then grayish-flesh-colored, finally becoming blackish-brown.

Stem: At least 12 cm tall, 0.8-2 cm thick, cylindrical, slightly tapering upwards and silky fibrous above the ring. The ring is very thin, hanging, its underside covered with membranous warts. The stem is often curved and has a characteristic rimmed bulb at the base.

Flesh: White flesh is thin in the cap, the stem is often hollow. Aniseed-smelling on pressure or cutting.

Spore: Purple-brown; 6.4-8 x 4-5.2 μm; ellipsoid.

Occurrence: The bulbous mushroom is fairly widespread. In Hungary, it is mainly found in slightly acidic soil, in deciduous and mixed forests, from June to November.

Edibility: Good edible mushroom, even if not everyone likes the aniseed smell.

Confusion: The young, still hemispherical mushroom is very similar to the white amanita. However, the latter has a pure white fruiting body, and its cap skin does not turn yellow when rubbed. Furthermore, the white amanita has a volva at the stem base. It is also very similar to the edible slender mushroom, but confusion with the latter is harmless, as it is an edible species.

Note: abruptibulbus means abruptly curved, broken. silvicola means forest-dwelling. It is quite widespread in Great Britain, Ireland and North America. It is also found throughout Europe.

Species description: The Italian obstetrician and amateur mycologist (he excelled in several sciences, as many did at the time) Carlo Vittadini (1800-1865) first described it scientifically in 1832, as Agaricus campestris var. silvicola, as at that time there was only one forest agaricus species, Agaricus campestris. In 1873, an American botanist-mycologist, Charles Horton Peck (1833-1917), named it as a separate species Agaricus silvicola.

Taxonomy

  1. PhylumBasidiomycota
  2. ClassAgaricomycetes
  3. OrderAgaricales
  4. FamilyAgaricaceae
  5. GenusAgaricus
  • Species: essettei
  • Described by: Bon
  • Hungarian name: gumós csiperke
  • Lifestyle: soil saprotroph
  • Edibility: edible
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