Page:An introduction to pharmacognosy (1905).djvu/249

Rh cells are usually smaller, about one-half the size of those of the pea, and the side walls are more markedly thickened. The parenchyma in the centre of the seed of the bean is made up of isodiametric cells whose walls are distinctly thicker than are the walls of the parenchyma of the pea. The starch grains are more distinctly oval and much larger, 50 microns representing the longer diameter of the larger grains. The hilum is distinctly elongated and lacerate.

The table from Vogl* on page 250 shows the contrasts more definitely.