LIFE HISTORY OF A MOSS 



195 



Fig. 140. — Sphagnum cymbifolium, Ehirb. A, B, C, cells from a 

 young leaf, X about 300; D, cells from a. mature leaf; E, section of a 

 similar leaf; F, cross-section of an old stem, showing the thick, large celled , 

 cortex, X about 25; G, Sderenchyma cells from the central portion of the 

 stem, X about 300. (After Campbell.) 



Fig. 141. — Sphagnum cymhifoUum, Ehrb. A, median longitudinal 

 section of a slender branch; x, the apical cell; B, part of a section of the 

 same farther down, showing the enlarged cells at the bases of the leaves, 

 and the double cortex {cor); C, cross-section near the apex of a slender 

 branch; D, glandular hair at the base of a young leaf; all X 525. (After 

 Campbell.) 



