a) Cap :

• It is convex to broadly convex or nearly flat .
• It is white in some varieties, brown in others.

b) Stem :

• 2-8 cm long thick, smooth or small scales below the rings that sometime disappear in maturity.

c) Gills:

• Free from the stem; close; pinkish to pinkish brown at first later becomes dark brown to blackish.

d) Flesh:

• White and firm.
• In Nepal, identified species of Agaricus are;

i. Agaricus bisporus

ii. A. campestris

iii. A. rodmani

iv. A. silvicola(most poisonous)

v. A. subfrutescence

• These genera can be cultivated in terai during winter and in Kathmandu and lower hills all the year round except summer.