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SCIENTIFIC AND APPLIED PHARMACOGNOSY 



longitudinally wrinkled or nearly smooth, with irregular scars of 

 bud-scales, nodes annulate from remains of bud-scales, upper part 

 marked with large circular, depressed stem-scars and sometimes 

 with buds; numerous root-scars at and near the lower portion of 

 the nodes; fracture short; internally lemon-yellow, bark 1 mm. in 



-E 



FIG. 103. Transverse section of podophyllum rhizome: E, epidermis; P, paren- 

 chyma containing starch; S, sieve; C, cambium; T, tracheae. 



thickness, wood yellowish, 0.5 mm. in thickness, pith large, white; 

 odor slight ; taste somewhat bitter and acrid. 



Inner Structure. See Fig. 103. 



Powder. Light brown and with a pronounced and character- 

 istic odor; starch grains numerous, spheroidal, polygonal or 2- to 



