er 
1897 | BRIEFER ARTICLES 295 
they are arranged in two bands, one on each side of the mibrid of 
the leaf. Each band is made up of from nine to fourteen rows of 
stomata. The stomata are never found on the midrib of the leaf. 
The presence of stomata on the bud scales can best be demonstrated 
by mounting them in chloral hydrate. This clearing agent will make 
the scale more transparent, cause eOorns 
Po ies cy xt \ XK Pa 
walls, and increase the guard cells of } j iN P ‘y K 
the stomata to their original size, iN | 4 A WA 
\) CY) \/ yy 
terior. CMY y 1 VAVA 
In the bud scales, as in their N { (ue, Ae A) 
leaves, the stomata are found only \\/ 
on the dorsal or lower surface of the Qpas 
considerable swelling of the cell we 
L 
rendering them visible from the ex- | | " 
morphological equivalents, the / \ 
scale. They are found only near the 
base of the scale and on that part of 
the epidermis which was covered \\\ 
over in the bud by the next lower Fic. 2.—Highly magnified por- 
scales. The cells of this part of the tion of dorsal side of a scale with 
epidermis never become sclerotic, Stomata. 
but remain thin walled (fig. 7,6). Theexposed epidermal cells become 
sclerotic, and stomata never occur on this portion of the scale 
(fig. 1, ¢). 
Stomata are found also on the axis of the bud and on the decurrent 
swelling or pulvinus of the scale (fig. 1,a). Stomata are found on the 
pulvini of all the scales, but on the scale laminz they occur only on 
the larger and well developed ones. They are found on the outer or 
lower exposed scales, as well as on the inner or upper ones. The 
stomata are not as regularly distributed in rows as they are on the 
leaves, They are found isolated and in groups, occurring also on the 
midrib portion of the scale itself,—ALEXANDER P. ANDERSON, Clemson 
College, South Carolina. 
