This section is from the book "Plants And Their Uses - An Introduction To Botany", by Frederick Leroy Sargent. Also available from Amazon: Plants And Their Uses; An Introduction To Botany.
32. Classes of food-plants. Having in the last chapter learned something of the uses and importance of the cereal grains, we may now profitably compare with them other food-plants many of which are almost as valuable as cereals although in different ways. It will be convenient to study them under the following headings: nuts, pulse, earth-vegetables, herbage-vegetables, fruit-vegetables, fruits, and miscellaneous food-plants.
 
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