Tab. XXVIII. 



A. DiCKSONIA DELTOIDEA, Hook. p. 80. 



Fig. 1. Portion of a fertile frond ; nat size. Fig. 2. Segment of 

 ditto; magnified. Fig. 3. Single sorus ; more magnified. 



B. DiCKSONIA SCABRA, Wall. — \i. 80. 



Fig. 1. Caudex and portion of the stipes ; nat. size. Fig. 2. 

 Portion of a fertile frond ; ditto. Fig, 3. Segment of dit- 

 to ; magnified. Fig. 4. Sorus ; more magnified. 



C. DiCKSONIA CUNEATA, Hook. — p. 80. 



Fig. 1. Portion of a sterile; and fig. 2, portion of a fertile frond; 

 nat. size. Fig. 3. Pinnule of ditto ; magnified. Fig. 4. 

 Two sori ; more magnified. 



D. DiCKSONIA Smithii, Hook. — p, 80. 



Fig. 1. Portion of a fertile frond; nat. size. Fig. 2. Pinnule 

 of ditto ; magnified. Fig. 3. Two soii ; moir magnified. 



