POLYPODIACEiE. 51 



in the outline and division of the fronds, it resembles that species 

 very much. In the present species, however, the venation is more 

 obscure • the sori form a single and continuous line the whole length 

 of the segments, about equidistant between the costa and margin ; 

 and the bases of the inferior segments are less decurrent on the stipe 

 than in the species referred to. 



16. Drynaria Billardieri. 



Polypodium Billardieri, R.Br. Prodr. M. Nov. Holl. p. 147; Gaud. Bot. Freyc. 



Voy. p. 351; A. Cimn. in Hook. Comp. Bot. Mag. 2, p. 362. 

 P. diversifolium, Willd. Spec. PI. 5, p. 166. 

 P. phymatodes, A. Rich. Bot. Voy. Astrol. p. 66 (excl. syn. Forst.). 



Hab. Bay of Islands, New Zealand. Illawarra, New South Wales : 

 on trees. 



In this, as in the following species, the divisions of the fronds pre- 

 sent a great variety of forms, from entire and elongated-lanceolate, 

 through various degrees of the lobed and digitate kind, to pinnatifid, 

 with numerous lanceolate segments, the terminal one the longest, and 

 with the lateral ones, bearing a single row of prominent, somewhat 

 sunken sori near the margin. 



17. Drynaria maxima, Sp. Nov. (Tab. 7.) 



D. stipite alato; fronde glabra sinuato-pinnatifida vel pinnatifida; 

 laciniis lanceolatis oblongisve acuminatis v. obtusis, terminali elongata 

 lata repando-sinuata ; rliachi subtereti prominente; soris sparsis 6b- 

 longis vel rotundis distantibus. 



Hab. Tahiti, Society Islands ; in mountain forests. 



Whole plant from 3 to 5 feet high, with a stout creeping rootstock. 

 Stipe short, smooth, semiterete, and channeled in front, broadly 

 winged, the wing widening upwards. Frond smooth, subcoriaceous, 

 the upper surface shining, irregular in its outline and divisions, sinu- 

 ately-pinnatifid, or pinnatifid down to within lb inches of the rhachis : 



