570 



THE BOOK OF CHOICE FERNS 



segments provided with sharp teeth. The very numerous sori (spore masses) 

 are closely set, broadly oblong in shape, and covered by a nearly kidney- 

 shaped involucre. — Hooker, Species Filieum, hi., p. 234. Beddome, Ferns of 

 British India, t. 295. 



A. (Hemidictyum) Finlaysonianum — He-mid-ic'-ty-um ; Fin'-lay- 

 son-i-a'-num (Finlayson's), Wallich. 

 A greenhouse species, native of the Himalayas and the Khasya Hills, 

 where, according to Beddome, it was discovered by Dr. Thomson. Its fronds, 

 of a coriaceous (leathery) texture and 1ft. to ljft. long, are borne on stipes 

 (stalks) Gin. to Din. long, green, and nearly naked ; they are simply pinnate 

 (only once divided to the midrib), being furnished with from two to six pairs 

 of lateral leaflets, which terminate in a long, tapering point, but are very 

 gradually narrowed towards the base to a distinct petiole (footstalk) and 

 have their edge smooth. The sori (spore masses) are frequently ljin. to 

 Sin. long.: — Hooker, Species Filieum, hi., p. 271. Beddome, Ferns of British 

 India, t. 72. 



A. (Euasplenium) firmum — Eu-as-ple'-m-um ; fir'-mum (firm-textured). 

 Synonymous with A. abscissum. 



A. (Euasplenium) flSSUni — Eu-as-ple'-m-um ; fis'-sum (cleft or split), 

 Kitson. 



This is a very pretty and well-marked species, of dwarf dimensions, native 

 of the South of Europe ; it luxuriates in either frame or greenhouse tem- 

 perature. The little fronds, of a thin, papery texture and seldom more than 

 5in. long by 2in. broad, are borne on slender, naked stipes (stalks) 2in. to 

 Bin. long, ebeneous (blackish) below, but of a bright green colour above ; 

 they are furnished on each side of the midrib with distant pinnae (leaflets) 

 divided into flabellato-cuneate (between fan- shaped and wedge-shaped) leaiits, 

 which are again pinnatifid (cut half-way down to the midrib). The linear- 

 oblong sori (spore masses) occupy, when mature, the whole breadth of the 

 segments of the pinnules, which are less than half-a-line in breadth. — 

 Hooker, Species Filicum, hi., p. 177. Nicholson, Dictionary of Gardening, 

 i., p. 130. 



