PTERIS. 305 



Jin. long and Jin. broad ; the texture of all is somewhat leathery, and they 



are densely clothed on both surfaces with viscid glands. The spore masses 



are covered with a double involucre of a parchment-like texture, the inner 



one being sometimes obsolete. — Hooker^ Species Filicum, ii., p. 200, t. 121b. 



P. (Campteria) Wallichiana — Camp-te'-ri-a ; Wal-lich-i-a'-na (Wallich's), 

 Agardh. 

 This is a very robust-growing, greenhouse species, native of Japan and 

 the Himalayas, where it is said to occur at 8000ft. elevation. Its ample, 

 thrice-divided fronds are borne on strong, bright chestnut-brown, glossy stalks 

 5ft. to 6ft. long. The central leaflet, often 2ft. long and Iffc. broad, is furnished 

 on each side with many spear-shaped, stalkless leafits cut down nearly to the 

 rachis into numerous narrow- oblong lobes nearly entire when barren ; the 

 lateral leaflets, as large as the central one, are again forked ; all are of 

 a soft, papery texture and pale green in colour. The spore masses are 

 disposed along nearly the whole length of the leafits. — Hooker, Species Filicum., 

 ii., p. 206. Beddome, Ferns of British India, t. 217. 



PYCNOPTERIS — Pyc-nop'-ter-is. See Nephrodium. 

 RHIPIDOPTERIS — Rhi-pid-op'-ter-is. See Acrostichum. 

 RHIZOGLOSSUM — Rhi-zog-los'-sum. See Ophioglossum. 



VOL. III. 



