xix] 



SPIKE OF HELMINTHOSTACHYS 



73 



Fig. 372. Helminthostachys zeylanica. 

 Young spike in oblique profile: the 

 primordia of the sporangiophores are 

 densely clustered on the margins. 

 (Magnified.) (After von Goebel.) 



F'g- 373- Helminlhoslachys. a, transverse section of the fertile spike, 

 through the region where sporangiophores will be formed ; b, young 

 sporangiophore ; c, three young sporangiophores, showing their mode 

 of origin, and differences in size. ( x 200.) 



