, , a F I L I C E S. 



140 



Hab. Organ Mountains, Brazil. 



The plant is tufted, and lias a smooth, slender, and slightly angular 

 stipe, sulcate in front, from 8 to 10 inches long, with a few short and 

 blackish scales at the base. Fronds simple, smooth on both sides, 

 oblong-lanceolate, acuminate; the margin at the base crenate, towards 

 the point terrate. 



* * Frondes pinnatse. 

 2. DlPLAZIUM PROLIFERUM, Sp. Nov. 



D ccespitosum; stipitibus semiteretibus him sulcatis pubescentibus ; fron- 



' dibits membranaceis glabris elongato-lanceolatis pinnatis ; pinnis alterms 



horizontalibus oblongo-lanceolatis obtuse serratis basi truncato-auricu- 



latis, inferioribus petiolatis, summis confluentibus ;^ rhacM pvolifera 



cum costa pubescente ; indusiis membranaceis amjustis. 



Hab. Tahiti, Society Islands : in mountain forests ; rare. 



Stipes 8 to 10 inches long, rather slender, semiterete, sulcate in front, 

 slightly pubescent. Fronds smooth on both sides, membranaceous, of an 

 elongated lanceolate form, and pinnate. Pinnce alternate, about 2 inches 

 long and 6 to 8 lines broad, oblong-lanceolate, and sometimes slightly 

 acuminate, the margin bluntly serrate, tJw base truncate, the superior 

 angle partially auriculate; inferior ones seated on a short petiole, while 

 towards the point they become sessile and confluent. Ehachk and 

 costa covered with a short brown pubescence; the former producing a 

 proliferous scaly bud, within two inches of the point of the frond. 

 The venules on the upper surface along the margin of the pinnae are 

 elevated and pale, and appear as if beset with appressed hairs. Indu- 

 sium membranaceous, narrow, and only double on the lower and exte- 

 rior venules. 



The claim of this to rank as a Diplazium rests entirely on the 

 lower and exterior venules bearing double sori; the other veinlets 

 producing only a single sorus, as in Asplenium. 



