246 



BOTANY AND PHARMACOGNOSY. 



elliptical or lanceolate (C parviflontm) . In C. hirsutuni the lip 

 is pale yellow with purple veins, 25 to 50 millimeters long, and 



Fig. 133. Vanilla planifolia, showing portion of stem bearing typical monocoty- 

 ledonous leaves, aerial roots and inflorescence. A, column (formed by the union of the 

 filaments, style and stigma), and the labellum (irregular segment of perianth); B, column 

 seen from the side; C, apex of column seen from the front showing anther (a), stigma (s); 

 D, section of anther; E, seed. — After Berg and Schmidt. 



possesses a tuft of white, jointed hairs at the throat. In C. parui- 

 Horum the lip is from 20 to 40 mm. long and non-hairy (Fig. 213). 



