LIFE HISTORY OF A MOSS 
C 
195 
FIG. 140. Sphagnum cymbijolium, Ehrb. 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, Sclerenchyma cells from the central portion of the 
stem, X about 300. (After Campbell.) 
FIG. 141. Sphagnum cymbifolium, 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 t cross-section near the apex of a slender 
branch; D, glandular hair at the base of a young leaf; all X 525. (After 
Campbell.) 
