PLANTS OF PRINCE OF WALFS ISLAND. 125 



1. Polypodium phyllitidis ? Gmel. 2. 1305. (Probably Tham- 



nopteris Nidus-avis L.). 



11 Fronds lanceolate, smooth, most entire, fructifications 

 scattered." 



Boot : fibrous. Stipes : several, columnar, furnished with 

 many lanceolate, caducous scales. Frond : simple, undivided, 

 lanceolate, pointed, most entire ; smooth ; with veins below, 

 opposite parallel, spreading. Fructifications : crowded. 



2. Polypodium ; an tenellum, Gmel. 2, 1310. 



" Fronds pinnate, leaflets alternate, remote, linear, acumin- 

 ate, waved." Forst. Prod. N. 440. 



Root : fibrous. Fronds : numerous, about a yard in height, 

 lanceolate, pinnate. Stipe near the base furrowed in front, 

 higher up cylindrical ; eight or nine inches of the lower part 

 bare. Pinnae : alternate, remote, linear, acute, most entire, 

 smooth ; the upper smaller. Fructifications : scattered ; gener- 

 ally in four rows, two on each side of the nerve. 



The trivial name given by Forster does not suit my plant, 

 which is pretty strong. Therefore I suspect they are distinct 

 species. 



Hemionitis, Smith p. 235. 



" Fructifications in scattered branching lines each of them 

 double, with a vein running between." 



" Involucra originating from the vein, and each separating 

 outwards." 



Hemionitis pinnatifida, H. 



Frond pinnated, lanceolate ; pinnae alternate, lance linear, 

 pointed, pinnatifid ; segments spatulate, obtuse, approximate. 



I think the generality of the involucra open on both sides, 

 the vein running up the middle ; and therefore have placed it 

 under this genus. But in several instances they appear to be 

 attached laterally to the vein, and open on one side only viz., 

 that which is remote from the vein, which is toward the nerve 

 or margin, according as the fructification is on the inner or 

 outer side of the vein. This having been noticed in the dried 



R. A. Soc, No. 53, 1909- 



