314 BOTANICAL GAZETTE. | December, 
fibers, the second season’s rowth of cork-cells appears to 
spread out from the outer phellogen cells of the first, so the 
circumference is increased with but very little outlay of ma-. 
beret eta fig. 24.) 
n 
varieties already described. The stem is shar ly four-an- 
gled, but the chlorophyll-holding cells extend entirely around 
it. They consist of several layers very similar in character 
