after studying the characteristics of agaricus,madan noted them as following
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Agaricus (Mushroom)
Sub-kingdom: Cryptogamae; Division: Thallophyta; Group: Fungi
Fungus is a eukaryotic organism classified as a separate kingdom and is not grouped under plants, animals and bacteria. This kingdom includes microorganisms such as yeasts, moulds and mushrooms. Fungal cells have cell walls that contain chitin, unlike the cell walls of plants, which contain cellulose.
Fungi lack chloroplasts and are heterotrophic organisms, and so require preformed (previously formed) organic compounds as energy sources. These organic compounds have already been made by plants, bacteria, fungi, or other animals; they are 'preformed', so to speak, by those other organisms.
Characteristics of Agaricus sp. (Mushroom)
Agaricus is a fleshy saprophytic fungus with over 300 species and contains both edible and poisonous species. It is found in wet and damp climates. It grows on wood and in humus-rich soil.
The upper part which is visible above ground is called basidiocarp. It consists of a fleshy cap called pileus. Horizontal groove-like structures called gills or lamellae are present on the lower surface of the cap. The gills bear club shaped basidia on either side, which contain spores called basidiospores. Below the cap is a stalk or stipe (stem) which has a ring-like structure called annulus. This gets cut off from the margin of the cap during its development.
Identifying features:
Agaricus does not possess chlorophyll pigment.
It is saprophytic in nutrition, which means that it obtains its nutrients from non-living organic matter.