IX FILICINEJE LEPTOSPORANGIATAl 345 



throws the spores violently away and returns to nearly its 

 normal position." 



Paraphyses, in the form of pointed hairs, often with a 

 glandular terminal cell, sometimes occur with the sporangia. 

 These in some Ferns, e. g., Aspidiuin filiv-mas, are direct 

 outgrowths of the sporangium itself. 



