368 THE BOOK OF CHOICE FERNS. 



measure 1ft. to Ijft. in length and 6m. to 9m. in breadth. The leafits 

 are cut down very nearly to the rachis, and their divisions are again deeply 

 pinnatifid. The ultimate segments, very narrow and distinctly flattened, are 

 dark green and shining, though very transparent. — Hooker, Species Filicum, 

 i., p. 137 ; Icones Plantarum, t. 702. 



T. Hartii— Hart'-i-i (Dr. Hart's), Baker. 



A finely-divided species, native of Sierra Leone. Its fronds are borne 

 on stalks that are 2in. to 4in. long, and winged at the upper part ; they 

 are Sin. to 6in. long, and composed of from eight to twelve pairs of stalkless 

 leaflets, the ultimate segments of which are oblong and blunt. — Hooker, 

 Synopsis Filicum, p. 80. 



T. hispidulum— his-pid'-ul-um (slightly hairy), Mettenius. 



From a sub-erect, woody rootstock, this species, native of Borneo, 

 produces its triangular fronds, which are 6in. to 12in. long, and borne on winged 

 stalks Sin. to 6in. long. The main rachis is narrowly winged throughout, 

 and the closely- set, triangular leaflets are dark olive-green. — Hooker, Synopsis 

 Filicum, p. 466. 



T, humile — hum'-il-e (dwarf), Forster. 



Though of small dimensions, this species, native of Java, New Zealand, 

 and the Pacific Islands, is very interesting. Its tiny, creeping, deeply- 

 intermatted rhizomes produce in abundance oblong- spear- shaped fronds, which 

 are lin. to 2in. long, ^in. broad, and twice deeply cleft nearly to the midrib 

 into simple or once-forked, narrow lobes. They are of a very transparent 

 nature, and form a dense mat when grown on a piece of dead Tree Fern. — 

 Hooker and Greville, Icones Filicum, t. 35. Nicholson, Dictionary of Gardening, 

 iv., p. 80. 



T. incisum — in-ci'-sum (cut). _ Synonymous with T. si 



smuosum. 



T. intramarginale— in-tra-mar-gin-a'-le (margined within). Hooker and 

 Greville. 

 A small-growing species, native of Ceylon, with slender, wide-creeping, 

 woolly rhizomes, from which oblong-spear-shaped fronds, lin. to 2in. long 



