CALUMBA 



179 



Leaves palmate, on long petioles. According to Bentley and Trimen, the 

 blade of the leaf often reaches 14 inches in length. Flowers dioecious, 

 sepals 6, petals 6, stamens 6; anthers 2-celled; fruit about the size of a hazelnut, 

 densely clothed with long, spreading hairs, each tipped with a black, oblong 

 gland. 



HABITAT. East Africa and Madagascar, cultivated in the East Indies. 



DESCRIPTION or DRUG. In transverse sections, circular or oval in 

 outline, 25 to 50 mm. (i to 2 in.) in diameter; 3 to 12 mm. Q to 



FIG. 82. Jateorrhiza palmata Portion of vine. 



% in.) thick. The outer edge is covered with a brown wrinkled 

 layer of cork. The bark is about 9 mm. (% in.) thick; 'a dark, 

 shaded cambium line separates this bark from the spongy grayish- 

 yellow central portion. In drying the central portion contracts more 

 than the outer, hence the disks are depressed at this point, where 

 also are found a few interrupted circles of projecting wood-bundles, 

 while the outer portion near the cambium is distinctly radiate. A 

 microscopic section shows near the center very distinct bright yellow 

 wood-bundles, which are narrow and radiate near the bark. The 

 parenchyma is filled with large, oval or circular starch granules. 



