322 BOTANICAL GAZETTE. [Dec., 
1. The leaves of Dactylis glomerata have one median band 
fig. 3). 
eo. In Chloris petrzea there is one middle band, and one or 
more on each side. 
3. The leaves of Poa pratensis have two bands, one on each 
side of the middle (fig. 4). 
. Andropogon squarrosus has one band each side of the 
middle and a small one at each edge. 
he leaf of Phleum pratense has one band of several shal- 
low cells each side of the middle and others between the veins 
(fig. 5). 
; "6. The leaves of Zea Mays have a band between each two 
primary bundles and above each third class bundle (fig. 2.) 
Fig, 10. 
7. The leaf of Leersia oryzoides has numerous bands on the 
upper surface each side of the middle, and one band each side of 
the keel on the lower side (fig. 6). 
The leaf of Amphicarpum Purshii has opposite bands of 
bulliform cells on both surfaces, though those above are most 
prominent (fig. 7). 
9. In case of the leaves of Panicum plicatum the bands of 
bulliform cells are first on the upper side and then on the lower, 
are found in grooves (fig. 8). 
10. The leaf of Andropogon prinoides has large epidermal 
cells of nearly uniform size distributed all along the surface, 
excepting over the veins (fig. 9). ; 
11. The leaf of Paspalum plicatum has a very irregular ep 
dermis, with groups of cells in the center of the leaf, several 
above each other, as well as side by side, all acting as bulliform 
cells (fig. 10, text). 
e In vernation the leaves take the same positions as when full 
grown and dried, though the bulliform cells at that time are very 
