630 



SCIENTIFIC AND APPLIED PHARMACOGNOSY 



C..: 



End-/ 



Fro. 278. Leptandra: A, rhizome showing the roots (R), buds (JB), and the base 

 of an aerial stem. B, transverse section of inner portion of a stolon. C, 

 cortex: End, endodermis; L, a deep strand of phloem having small sieve 

 groups and thin-walled parenchyma; Cnmb, cambium; H, primary tracheae 

 bordering on the pith (P). C, transverse section of part of the stele of the 

 main rhizome: H, the secondary hadrome, showing numerous, thick-walled 

 wood fibers and a single trachea. D, transverse section of outer portion of 

 a root: Ep, epidermal cells having thick outer walls; Ex, hypodermis; C, 

 cortex. E, transverse section of a portion of the root-stele: C, cortex; 

 End, endodermis; P, pericambium; L, leptome; H, hadrome. After Holm, 

 Merck's Report, 1913, p. 61. 



