12 FILICES. 



Hab. Organ Mountains, Brazil : on rocks and trees. 



Eootstock short, globose, and squamose-hirsute, with capillaceous 

 smooth branching rootlets. Stipes about half an inch long, round, 

 slender, and hirsute. Fronds flaccid from 6 to 10 inches in length, 

 pendulous in their direction, linear, obtuse, and pinnate, hirsute on 

 both sides, the hairs brown. Pinnce alternate, horizontal, 5 lines long 

 and 3 lines broad, ovate or ovate oblong, two-thirds of the base adnate, 

 the superior one auriculate, bearing from 8 to 10 round approximate 

 sori, with echinate sporangia. 



On first inspection, Ave considered this as a mere form of P. cul- 

 tralwm, Willdenow, but a farther and more careful examination of 

 the hairs on the surface and margin of the pinnae, with the echinate 

 sporangia, in a great measure convinced us that it is distinct. Will- 

 denow's description, however, is very short and unsatisfactory. 



17. POLYPODIUM TENELLUM, Forst. 



Pohjpodium tenellum, Sw. Syn. Fil. p. 38 et 233 ; Willd. Spec. PI. 5, p. 185 ; R. Br. 

 Prodr. Fl. Nov. Holl. p. 147; A. Cunningh. in Hook. Couip. Bot. Mag. ii. p. 363. 



Hab. New Zealand : in forests, banks of the Waicaddie River, and 

 vicinity of the Bay of Islands ; Illawarra, New South Wales. 



This has a very slender, branching, and paleaceous rootstock, 

 ascending the trunks of trees, but sometimes found rambling over 

 rock sand decayed timber. Fronds scattered, imparipinnate, with a 

 short sulcate, sparsely paleaceous stipes. Pinnae distant, alternate, 

 subcoriaceous, lanceolate, and slightly acuminate, with a repand-den- 

 tate margin ; base unequal and cuneate, with the superior part trun- 

 cate-auriculate. Sori round, solitary, and seated near the margin. 



18. POLYPODIUM TAMARISCINUM, Kaulf. 



Polt/podium tamariscinum, Kaulf. Enum. Fil. p. 117. 



Adenophorus lipinnatus, Gaud. Bot. Freyc. Voy. p. 365 ? t. 8, f. 2; Hook. & G-rev. Ic. 



Fil. t. 174 ; Hook & Arn. Bot. Beech. Voy. p. 105. 

 A. tamarisci, Hook. & Grev. Ic. Fil. t. 175. 



