The endodermal cells of convallaria (Plate 35, Fig. 3) are yellowish white in color, and the walls are porous and striated. The outer wall of the layer of cells is thinner than the inner wall. The innermost layer of cell is more uniformly thickened.
PLATE 35
Cross-Sections of Endodermal Cells of
1. Sarsaparilla root (Smilax officinalis, Kunth).
2. Triticum (Agropyron repens, L.).
3. Convallaria (Convallaria majalis, L.).
4. Aletris (Aletris farinosa, L.).
The endodermal cells of aletris (Plate 35, Fig. 4) are yellowish brown, slightly porous and striated. There are one or two layers of these cells, and two of the smaller cells usually occupy a space similar to that occupied by the radically elongated single cell.
On a longitudinal view, the endodermal cells of sarsaparilla triticum, convallaria, and aletris appear as follows:
Those of sarsaparilla (Plate 36, Fig. 1) are greatly elongated, the ends of the cells are blunt or slightly pointed, and the walls appear porous and striated.
Those of triticum (Plate 36, Fig. 2) are elongated, the walls are porous and striated, and the outer wall is much thinner than the inner wall. The end wall between two cells frequently appears common to the two cells.
Those of convallaria (Plate 36, Fig. 3) are elongated, and the end wall is usually blunt. The outer wall is thinner than the inner wall.
Those of aletris (Plate 36, Fig. 4) are fibre-like in appearance; the ends of the cells are pointed and the wall is strongly porous. The longitudinal view of these cells is shown in plate 36.