POLYPODIACEil. 207 



Polystichum coriaceum, Schott, ex Presl, Tent. Pterid. p. 84. 



Aspidium coriaceum, Sw. Syn. Fil. p. 75, excl. syn. nisi Forst.; Willd. Spec. PI. 5, 



p. 268, pro parte ; R. Br. Prodr. Fl. Nov. Holl. p. 148 ; A. Rich. Bot. Yoy. 



Astrol. p. 71; Gaud. Bot. Freyc. .Voy. p. 344. 



Hab. Vicinity of the Bay of Islands, New Zealand. 



Stipe from a span to a foot in length, slightly compressed, with a 

 shallow groove in front, rough to the touch, chaffy with copious, large, 

 blackish, entire, attenuated scales at the base, more sparsely palea- 

 ceous above. Fronds usually about the same length as the stipe, 

 rigid, coriaceous, triangular-oblong and acuminate, both sides alike in 

 colour, smooth, somewhat bipinnaie, that is, the alternate pinnae are 

 pinnate at the base and pinnatitid towards the point, which is acumi- 

 nated and sharply serrate. Pinnules or segments from one to two 

 and a half inches in length, oblique, either ovate-oblong and acute, or 

 lanceolate, sharply serrate, sometimes crenate-dentate, beset with dots 

 or raised points on the upper side, opposite the sori. Rhachis and 

 costa crinitepaleaceous. Sori solitary, somewhat in rows. Indusium 

 large, peltate, entire. 



This is subject to much variation in the number of the divisions of 

 its fronds and the form of its pinnules. Mr. Brown describes the 

 fronds as decomposite and deltoid, and A. Richard as subbipinnate ; 

 and to states of the plant described by the latter, ours approaches 

 very closely. 



# # * Frondes decomposike vel tripinnatce. 



10. Polystichum discolor. 



P. stipite loevi sulcato paleaceo; frondibus coriaceis decompositis trian- 

 gidari-ovatis, divisionibus tripinnatis; pinnulis petiolulatis lanceolatis 

 lobato-ser ratis, infimis pinnatipartitis, laciniis oblongis obtusis dentibus 

 latis serratis; soris magnis solitariis; indusio orbicidari peltato inte- 

 gerrimo. 



Aspidium discolor, Langsd. & Fisch. Ic. Fil. p. 16. 



Rumolira aspidioides, Raddi, Plant. Brasil. p. 28, t. 43 j Gaud. Bot. Freyc. Voy. p. 345. 



