Tab. XCIII. 



A. Pteris scaberula. A. Rich. (Allosorus scaberuliis, Presl). 

 Fig. 1. Sterile primary pinna; nat. size. Fig. 2. Fertile primary 



pinna, seen from beneath; nat. size. Fig. 3. Apex of a fer- 

 tile frond, seen from beneath ; nat. size. Fig. 4. Fertile 

 pinnule, seen from beneath ; magnified. 



B. Cheilanthes viscosa, Link. — p. 104. 



Fig. 1. Frond and stipes, (fertile) ; nat. size. Fig. 2. Fertile pin- 

 nule, seen from beneath ; magnified. 



