1, concanavalin: The nutrient layer consists of more than ten rows of tangentially elongated parenchyma cells, while the inner layer cells are decadent, and concanavalin is sweet, flat and nontoxic.

2. Lentils: The seeds of white lentils are oblate or oblate, the surface is pale purple, red, white or yellowish, smooth and slightly shiny, and there is a raised white half-moon bulge on one side edge, which is slightly fragrant and light in taste, and has a beany smell when chewing.

3. Kidney beans are very big, at least 10 times larger than lentils, with different production habits and different nutritional values.