POLYPODIUM. 229 



erect, glossy stalks 4in. to 6in. long. The fronds are formed of an entire or 

 sliglitly-tootlied terminal leaflet and one to three similar ones on each side ; 

 these are Sin. to 4in. long, of a somewhat leathery texture, and naked on 

 both sides. The oblong spore masses are quite immersed. — Hooker^ Species 

 Filicum, v., p. 22. 



P. (Phymatodes) triquetrum — Phy-mat-o'-des ; tri-quet'-rum (three- 

 sided), Blume. 

 The fronds of this stove species, native of Java, are produced from 

 a stout, woody rhizome densely covered with blunt scales, and borne on firm, 

 erect stalks 4in. to Sin. long. The barren and the fertile ones are distinct in 

 shape, the former being Bin. to 9in. long, 2in. to Sin. broad, sharp-pointed, and 

 with an entire edge ; while the fertile ones are longer and narrower. Both 

 are of a very leathery texture and naked on both sides. The spore masses, 

 which are not immersed, are disposed in two close rows between the main 

 veins, five to eight between the midrib and edge. — Hooker, S'pecies Filicum, 

 v., p. 63. Nicholson, Dictionary of Gardening, iii., p. 194. 



P. (Phegopteris) unidentatum — Phe-gop'-ter-is ; u-nid-en-ta'-tum 

 (once-toothed). Hooker and Arnott. 

 A stove species, of large dimensions, native of the Sandwich Islands, 

 producing ample fronds 2ft. to 3ft. long, 1ft. or more in breadth, and deltoid 

 (in shape of the Greek delta. A). These fronds are borne on tufted stalks 

 1ft. long, and clothed with rough, dark brown scales, especially towards their 

 base. The lowest leaflets, which are the largest and of the same shape as 

 the frond itself, are 6in. to 9in. long, 4in. to 5in. broad, and furnished with 

 spear-shaped leafits, cut into distinct segments, which are deeply cleft, of 

 a soft, papery texture, and naked on both sides. The spore masses are 

 disposed close to the margin. — Hooker, Species Filicum, iv., p. 267. Nicholson, 

 Dictionary of Gardening, iii., p. 194. 



P. (Phegopteris) unisorum— Phe-gop'-ter-is ; u-nis-or'-um (having one 

 sorus). Baker. 

 This very distinct, little, stove species, native of the Sandwich Islands, 

 is a botanical curiosity. Its oblong-spear-shaped fronds, 2in. to Sin. long and 



