454 



A TEXTBOOK OF THEORETICAL BOTANY 



C 



D 



E 



J 



K 



Fig. 441. — Types of cells. A, A^ropyium repeiis. Thin- walled parenchyma from 

 stem cortex. B, Cocculus sp. Thick-walled parenchyma with numerous pits 

 from stem pith. C, Rimiex crispus. Collenchyma from stem cortex. D, Beta 

 vidgaris. Collenchyma from stem cortex. E, Aralia sieboldii. Collenchyma 

 from petiole. F, Persoouio jumperina. .Sclerenchyma from leaf. G, Pitms 

 pineci. Sclerenchyma from cone scale. H, Magnolia grandiflora. Stereids 

 from root cortex. ] , Talauma hodgsom. Stereid from pericarp. K,Podocarpus 

 sp. Stereids from testa. 



