A. bisporus being cultivated
Vitamin D2 supplements
White Agaricus bisporus
Two Agaricus bisporus mushrooms that have fused together
Portobello mushrooms
Cross-section of a portobello cultivar
Ventral view of a portobello cultivar with a bisected stipe
Grilled portobello, feta, and rocket salad on toasted baguette

Mushrooms, Agaricus bisporus:

- Ergocalciferol

While fresh A. bisporus only contains 0.2 micrograms (8 IU) of vitamin D as ergocalciferol (vitamin D2), the ergocalciferol content increases substantially after exposure to UV light.

- Agaricus bisporus

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The Eatable Natural mushroom grow in India

Mushroom

Fleshy, spore-bearing fruiting body of a fungus, typically produced above ground, on soil, or on its food source.

Fleshy, spore-bearing fruiting body of a fungus, typically produced above ground, on soil, or on its food source.

The Eatable Natural mushroom grow in India
The psychotropic mushroom Amanita muscaria, commonly known as "fly agaric"
Amanita muscaria, the most easily recognised "toadstool", is frequently depicted in fairy stories and on greeting cards. It is often associated with gnomes.
Morphological characteristics of the caps of mushrooms
Maitake, a polypore mushroom
A mushroom (probably Russula brevipes) parasitized by Hypomyces lactifluorum resulting in a "lobster mushroom"
Amanita jacksonii buttons emerging from their universal veils
The blue gills of Lactarius indigo, a milk-cap mushroom
Morchella elata asci viewed with phase contrast microscopy
Agaricus bitorquis mushroom emerging through asphalt concrete in summer
Yellow flower pot mushrooms (Leucocoprinus birnbaumii) at various states of development
The Agaricus bisporus, one of the most widely cultivated and popular mushrooms in the world
Culinary mushrooms are available in a wide diversity of shapes and colors at this market stand at the San Francisco Ferry Building.
Young Amanita phalloides "death cap" mushrooms, with a matchbox for size comparison
Psilocybe zapotecorum, a hallucinogenic mushroom
There are over 100 psychoactive mushroom species of genus Psilocybe native to regions all around the world.
Ganoderma lingzhi
A tinder fungus, Fomes fomentarius

The standard for the name "mushroom" is the cultivated white button mushroom, Agaricus bisporus; hence the word "mushroom" is most often applied to those fungi (Basidiomycota, Agaricomycetes) that have a stem (stipe), a cap (pileus), and gills (lamellae, sing.

The US Department of Agriculture provided evidence that UV-exposed mushrooms contain substantial amounts of vitamin D. When exposed to ultraviolet (UV) light, even after harvesting, ergosterol in mushrooms is converted to vitamin D2, a process now used intentionally to supply fresh vitamin D mushrooms for the functional food grocery market.