), but the latter may be distinguished by their volva or cup at the base of the mushroom and pure white gills (as opposed to pinkish or brown of A. bisporus). The spores are oval to round and measure approximately 4.5–5.5 μm × 5–7.5 μm, and the basidia usually two-spored, although two-tetrasporic varieties have been described from the Mojave Desert and the Mediterranean, with predominantly heterothallic and homothallic lifestyles, respectively..  This form is commonly sold under the names portobello mushroom, portabella mushroom, and portobella mushroom, but the etymology is disputed.. , Some mushrooms contain hydrazine derivatives, including agaritine and gyromitrin, that have been evaluated for carcinogenic activity. : Fr. These easy-to-find mushrooms are quite versatile and excellent for use both raw and cooked. It is first hemispherical in shape before flattening out with maturity, and 5–10 centimetres (2–4 inches) in diameter. For the Brazilian musician, see, "portobello | Definition of portobello by Lexico", Journal of Agricultural and Food Chemistry, https://en.wikipedia.org/w/index.php?title=Agaricus_bisporus&oldid=987205193, Taxonbars with automatically added basionyms, Creative Commons Attribution-ShareAlike License, This page was last edited on 5 November 2020, at 16:12. A relative of the highly-prized truffle, morel mushrooms are tan to dark-brown, cone-shaped, and spongy with a smoky, earthy, and nutty flavor. Fresh mushrooms are also a good source (10–19% DV) of the dietary mineral phosphorus (table). The white mushroom was discovered in 1925 growing among a bed of brown mushrooms at the Keystone Mushroom Farm in Coatesville, Pennsylvania. The earliest scientific description of the commercial cultivation of A. bisporus was made by French botanist Joseph Pitton de Tournefort in 1707. A. bisporus is cultivated in more than seventy countries, and is one of the most commonly and widely consumed mushrooms in the world. Furthermore, the destroying angel grows in mossy woods and lives symbiotically with spruce. The cylindrical stipe is up to 6 cm (2 1⁄2 in) tall by 1–2 cm (1⁄2–3⁄4 in) wide and bears a thick and narrow ring, which may be streaked on the upper side. Originally, cultivation was unreliable as mushroom growers would watch for good flushes of mushrooms in fields before digging up the mycelium and replanting them in beds of composted manure or inoculating 'bricks' of compressed litter, loam, and manure.  Danish mycologist Jakob Emanuel Lange later reviewed a cultivar specimen, and dubbed it Psalliota hortensis var. bispora in 1926. Plump and dome-shaped, these mushrooms have a mild, pleasing flavor that intensifies when cooked. There are 2,000 or more kinds of wild mushrooms in Ohio. The pileus or cap of the original wild species is a pale grey-brown in color, with broad, flat scales on a paler background and fading toward the margins. Phylum: Ascomycota - Class: Pezizomycetes - Order: Pezizales - Family: Pezizaceae Distribution - Taxonomic History - Etymology - Identification - Culinary Notes - Reference Sources. The common mushroom has a complicated taxonomic history. Up to 8cm across. A. bisporus is now cultivated in at least seventy countries throughout the world. Observer and Facebook for learning names of local mushrooms deadly poisonous destroying angel grows in mossy woods lives! Native to grasslands in Europe and North America by French botanist Joseph Pitton de Tournefort in 1707 flavor! 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