T^NITIS. 345 



T. lanceolata — lan-ce-ol-a'-ta (lance-shaped), B,. Brown. 



This West Indian species is provided with a very stout, creeping 

 rhizome, from which its simple (undivided) fronds, borne on firm, upright 

 stalks lin. to 2in. long, are produced. They are 6in. to 12in. long, lin. 

 to 2in. broad, gradually narrowed from the centre to both ends, with the 

 edge entire but often crisped ; they are of a firm, leathery texture, naked, 

 and their midrib is very distinct. The spore masses are .disposed in either 

 continuous or interrupted lines near the edge of the contracted upper third 

 or quarter of the frond. — Hooker.^ Species Filicum, v., p. 186. Nicholson, 

 Dictionary of Gardening, iv., p. 4. 



T. marginalis — mar-gin-a'-lis (marginal), Moore. 



This species, native of Java, is very closely related to T. lanceolata, 

 from which, however, it is readily distinguished by its smaller size and 

 by the' absence of the midrib. — Hooker, Synopsis Filicum, p. 397. 



T. obtusa — ob-tu'-sa (blunt), Hooker. 



A very small-growing species, native of Borneo, with entire (undivided) 

 fi'onds produced from a creeping rhizome and borne on slender, glossy, 

 naked stalks 2in. to Sin. long. The leafy portion of the fronds, l^in. to 

 2in, long and ^in. to fin. broad, is oblong, blunt at the summit, and 

 rounded at the base. They are of a leathery texture, with spore masses 

 disposed in a continuous line Jin. from the edge. — Hooker, Species Filicum, 

 v., p. 186 ; Second Century of Ferns, t. 94. 



THAMNOPTERIS — Tham-nop'-ter-is. See Asplenium. 



