197 



India, western mountains, rare. It is pro- 

 bably only a form of flexuosum. 



SUB-ORDER V. MARATTIACE^ 

 Sporangia opening by a slit down one side 

 or a pore at the apex without a ring, usually 

 joined together in concrete masses (synangia), 

 vernation circinate. 



GENUS LI. ANGIOPTERIS HOFFMANN. 



(Deriv. Angio, open ; pteris, fern the open 

 sporangia.) 



Sporangia opening by a slit down the side, 

 sessile, very close to one another but not 

 concrete, arranged in linear oblong or boat- 

 shaped sori near the edge of the frond ; veins 

 simple or forked, tree ; fronds very large, bipin- 

 nate, often only pinnate. Stipes club-shaped 

 at the base, and springing between two fleshy 

 stipules. Pinnae and pinnules articulate with 

 the rachis. 



Angiopteris cvecta Hoffmann. 

 A handsome gigantic fronded fern. Caudex 

 short, about two feet high. Fronds 6-20 feet long, 

 bipinnate, often only pinnate; rachis swollen 

 at the base ; pinnules (or in the case of pinnate 

 fronds, pinnae) 4- 12 inches long, \-i\ inch 



