Tab. T. 



A. Gleichenia SpelunCjK, Br. — ^p. 2. 



Fig. 1. Small entire plant, nat. size. Fig. 2. Portion of a 

 larger frond. Fig. 3. Fertile segments, magnijied. 



B. Gleichenia rupestris, Br. — p. 2. 



Fig. 1. Portion of a frond j nat. size. Fig. 2. Fertile seg- 

 ment; viagnijied. 



C. Gleichenia dicarpa, Br. — p. 3. 



Fig. 1. Portion of a frond ; nai. size. Fig. 2. Upper side of 

 a fertile portion of a pinna; and Fig. 3, Lower side of 

 ditto; magnijied. Fig. 4. Single segment; more mag- 

 n ified. 



