50O 



BOTANY AND PHARMACOGNOSY. 



species of Zieria found in Southern Australia and Tasmania, and 

 Toddalia aculeata found in the mountains of Eastern Africa, trop- 

 ical Asia and the PhiHppine Islands (see also p. 483). 



F:g. 219. Transverse section of a part of the rhizome of hydrastis near the cambium: 

 P, parenchyma; S, sieve; C, cambium; T, tracheas; F, wood fibers. 



LEPTANDRA. CULVER'S ROOT. The dried rhizome 

 and roots of Leptandra virginica (Fam. Scrophulariacese), a per- 

 ennial herb growing in meadows and moist woods of the Eastern 



