46 



OPHIOGLOSSACEAE 



[CH. 



Fig. 338. Botrychium Lunaria. Sterile laminae, which occasion- 

 ally produce sporangia {sp.) on certain pinnae, and have partly 

 or wholly assumed the form of the fertile spike; /, shows the 

 base ofthe fertile spike itself. (Natural size. After von Goebel.) 



Fig. 339. Heliimtthostachys zeylanica Hook. Rhizome. 

 (Natural size.) /"= flap ; R^ root ; L = leaf; P= petiole; 

 Z.5. = leaf-scar. (After Farmer and Freeman.) 



