1892. ] Anatomical Characters of Graminee. 359 
Five species of Leersia are enumerated from this coun- 
name L. oryzotdes Swtz., L. Virginica Willd., L. len- 
ticularis Michx., L. monandra Swtz. and L. hexandra Swtz. 
LEERSIA ORYZOIDES Swtz. A series of anatomical sec- 
tions has been figured on plate xx, and the rule has been 
followed strictly, as before, of taking the sections from the 
middle part of the blade of completely developed leaves. It 
must be noted, however, that such leaves only have been 
used for examination as are situated at the base of the culms 
strongly thickened exterior ones. Seen in transverse section 
(plate Xx, fig.9) they show a rather narrow lumen. These cells 
cover the entire face, excepting the two lines on the sides of 
the carene, where the bulliform cells are to be observed (figs. 
in lines outside the groups of stereome. The warts (fig. 1.) 
are roundish, obtuse and solid projections, of which about 
fifteen are present on each epidermis cell, excepting, where 
© curved, thorn shaped expansions are found. They are 
of stereome, and are situate 
Sular alternation with each other. The stomata them- 
a in the same plane as the epidermis cells and are 
Sunded only by some of the wart-shaped expansions. 
