(43) 



EXPLANATION OF PLATE LXXXIL 



Fig. 1. — Gymnogongriis Griffithsia;, natural size. 

 2. — Brancblet with nemathecia. 

 3. — Semi-section of frond and uemathecium. 

 4. — Filament from nemathecium. 

 5. — Semi-section of frond. All magnified. 



