POLYPODIACEH. 137 



impari-pinnate. The pinnules, of from 4 to 7 pairs with an odd one, 

 are linear-lanceolate, acuminate, from 6 to 10 inches long and from 8 

 lines to an inch broad; the margin entire, slightly undulate and 

 revolute ; the petiole of the terminal one about an inch long ; of the 

 lateral ones about half that length. Stipe and rhachis smooth and 

 firm, nearly round, with a narrow channel in front. Sori close to 

 and parallel with the costa, having a broad and vaulted indusium, of 

 a dark brown colour. We never found the fronds to ascend bushes 

 and trees so high as to make it impracticable, when standing on the 

 ground, to obtain perfect fertile specimens. 



48. D D I A, E. Br., J. Sm. 



Although this genus agrees in habit with Blechnam, yet it differs 

 from that genus by the interrupted sori; and from Woddioardia by 

 its less immersed sporangia, plane indusium, and more elevated vena- 

 tion on the under side. 



1. Doodia aspera, B. Br. 



Doodia aspera, It. Br. Prodr. Fl. Nov. Holl. p. 151; A. Rich. Bot. Yoy. Astrolab. 

 p. 76 ; A. Cimn. in Hook. Comp. to Bot. Mag. 2, p. 364. 



Hab. Vicinity of Port Jackson, New South Wales. Bay of 

 Islands, New Zealand. 



The sori of the New Zealand plant occupy only a single row ; 

 while in that from New South Wales, they are frequently in two 

 rows on each side of the costa, the result of a second anastomosis of 

 the venules. In other respects the two plants are similar. 



2. Doodia Kunthiana, Gaud. 



Doodia Kunthiana, Gaud. Bot. Freyc. Yoy. p. 401, t. 14; Hook. & Arn. Bot. 

 Beech. Yoy. p. 74 & 107; A. Cunn. in Hook. Comp. Bot. Mag. 2, p. 365; Hook. 

 Gen. Fil. t. 54, A, f. 1-5. 



35 



