There are many species of fungi, some of which are available for food, while others are irritating, and still others produce violent gastro-intestinal disorder, and by their absorption give rise to symptoms of collapse, and may cause death.

Konig gives the following percentage composition:

Fresh mushroom.

Fresh truffle.

Fresh common morel.

Water

91. 11

72.08

90.00

Non-nitrogenous substances

2.57

8.9I

3.48

Fat.............................

0.13

0.62

0.24

Grape sugar, mannite

1.05

0.72

Other non-nitrogenous substances...

3.71

7.54

3.95

Woody fibre

0.67

7.92

0.67

Ash.............................

0.76

2.21

0.94