432 



BOTANY AND PHARMACOGNOSY. 



Another principle, pseudo-strophanthin, has been isolated from 

 the seeds of some undetermined species of Strophanthus. This 



Fig. 186. Transverse section of strophanthus seed; SC, seed-coat with unicellular 

 non-glandular hairs (H); R, raphe; E, endosperm; C,C, cotyledons with fibrovascular 

 bundle (V) and palisade cells (P). 



principle appears to be more powerful than strophanthin, but is 

 less satisfactory as a heart tonic. 



