NS | PRS Me Pi Ft 
FREES) BB eS tructural and Physiological Botany. 
—__- functions of the separate cells. In the former the cells unite ee 
only into a group, the elements (separate cells) of which can — 
still be easily recognised, and still possess a certain individu- 
5 Fic. 60.—Transverse section through the ‘ punctum vegetationis’ or original 
parenchyma of the fig, /zcws carica ; the cells are still roundish and in , 
the act of dividing. (X 1200.) La ; 
° 
ality ; in the latter, on the contrary, the separate cells coalesce  - 
into a single individual, the elements of which are often com- 
Fic. 61.—Parenchymatous tissue ; transverse section through a deeply buried . 
part of the pith of the apex of the plumule of the horse-chestnut ; the cells ~ a 
have become crowded and hence polygonal; only a few have as yet - 
divided. (x 800.) 
pletely indistinguishable as such. Both are of much greater es 
importance in the vegetable world than cell-families, since 
their occurrence 1s incomparably more frequent. OS ae 
