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KVXfpIt VMH V. Smith. 



Nyii^'raiBiiiia cartllagidens. Bhiets. in Engl. & Prantl r 

 Nat. Pfl-fam., I 4 , 25T; Gymnogramme cartilagidens, Bk., Hk. Bk., 

 Syn. Fil. {1868), 386; Cesati, Fel. di Bor., tab. II, fig. 3— 3a; 

 Aerodichttm borneense, Burck, Ann. Btz., IV {1884), 99; Elapho- 

 gloHsum borneense, O. Ghv., Ind. Fil., 303. 



The plants gathered in Bomeo by Dr. Nieuwenhuis and deter- 

 mined by Christ as Gymnogramme cartilagidens, Bk., (Ann. Btz., 

 XX, 131) and those collected by Mr. Teuscher, described by 

 Dr. Burck as Acrostichum borneense are identical; the only 

 difference is that the former were all yoimg (however soriferous) 

 plants and the latter both young and adult. 



Rhizome short-creeping, densely clothed with small, black 

 or dark-brown hairs or fibres towards the apex. Stipes approximate, 

 i/ 2 — 4 c.m. long, (the fertile fronds on the longest stipes in the 

 fully developed plants), deciduously fibrillose at the base. Fronds 

 decidedly dimorphous in the adult plants, but less so in the 

 younger ones, the barren ones + 10 — 50 c.m. long, + 2 — 3 

 c.m. broad, lanceolate or linear-lanceolate, narrowed gradually 

 from the middle towards both ends, the apex acuminate, the 

 edge cartilagineous, decoloured, densely fringed with small, car- 

 tilagineous, short-oblong, bluntish or blunt, spreading or erecto- 

 patent teeth or serratures in the younger or smaller forms, but 

 sharply serrato-denticulate throughout or towards the base only 

 in the largest or adult forms, which are not rarely subentire 

 towards the apex. Texture coriaceous; surfaces naked; costa 

 prominent beneath, more or less distinctly canaliculate towards 

 the base on the upper side in the larger and sometimes also in 

 the smaller forms; veins close, fine, simple or forkecl, connected 

 by the cartilagineous edge or by fine, transversal veinlets near 

 the margin. Fertile fronds longer and narrower than the barren 

 ones, not rarely subsimilar to the latter in the smaller forms, 

 + 15 — (50 c.m. long, 1 j 2 — l 1 /^ c.m. broad, linear-lanceolate 

 or linear, narrowed very gradually towards both ends in the 

 larger forms. Sori occupying the upper 1 / 2 — 9 /io P art °f the 

 fertile fronds, linear, running along the veins, reaching from the 

 costa to where the veins join, at length often confluent; paraphyses 



