PTERIS. 275 



down to a broadly -winged rachis into numerous narrow, sickle- shaped lobes, 

 which are slightly and bluntly toothed when barren ; the lateral ones are 

 numerous and often measure l^ft. in length and 4in. in breadth. The leaflets 

 are further divided into pinnules (leafits) nearly 2in. long. The texture of 

 the fronds is leathery, and they are naked on both sides, the spore masses 

 falling short of the extremity of the segments. — Hooker, Species Filiciim, 

 ii., p. 217. 



P. glauca — glau'-ca (bluish-green). Synonymous with Pellcea glauca. 



P. gracilis — grac'-il-is (slender). Synonymous with Pellcea gracilis. 



P. (Heterophlebium) grandifolia— Het-er-oph-leb'-i-um ; gran-dif-ol'-i-a 

 (large-leaved), Linnceus. 

 This stove species, of medium dimensions, which, according to Lowe, was 

 introduced into England in 1793, is a native of the West Indies, Mexico, and 



Fig. 75. Pinna of Pteris grandifoiia 

 (nat. size). 



Peru. Its simply-pinnate . (once-divided) fronds, 1ft. to 2ft. long, are borne 

 on erect, straw-coloured stalks 6in. to 12in. long. The leaflets are narrow, 

 tapering to a. sharp point (Fig. 75), of a leathery texture, and naked on both 

 surfaces. The spore masses are often continuous along the whole length 

 of the leaAets.— Hooker, Species Filicum, ii., p. 201, t. 113b. Nicholson, 

 Dictionary of Gardening, iii., p. 242. Lowe, Ferns British and Exotic, 

 iii., t. 49. 



P. (Litobrochia) grandiS— Li-tob-roch'-i-a ; gran'-dis (large). A garden 



name for P. nobilis. 



T 2 



