g42 66. STWeRAMMA. § 2. toxopteris 



1/j — 2'/j C.M. broad, ligulate, narrowed to both ends, but more gradually to 

 the base, the edge slightly toothed or crenate; barren fronds the broadest. 

 Texture coriaceous; surfaces naked; veins immersed, 1 — 2X forked; con- 

 necting veinlets indistinct, suhmarginal. 

 Borneo, Celebes, Amboyna; Fiji. 



* (6) S. caraiagidens, JHeU, BuU. D6p. Agr. I. N., 1908, 

 XVIII, 18; Gymnogramme cartilagidens, Bk., Hk. Bk., Syn. Pil., 386; Ces., 

 Fel. di Bor., tab. II, fig. 5 — 3a; Neurogramme cartilagidens, Christ, Farnkr. d. 

 Erde, 63, fig. 156; Acrostichum Borneense, Burck, Ann. Btz., IV, 99; Elapho- 

 glossiim borneense, C. Chr. Ind. Fil. 



Rhizome short-creeping, densely clothed with small, black or dark-brown 

 hairs or fibres towards the apex. Stipes approximate, '/s — * c.M long, (the 

 fertile fronds on the longesl stipes in the fully developed plants), fibrillose at 

 the base, the fibrils deciduous. Fronds decidedly dimorphous in the adult 

 plants, but less so in the younger ones; barren fronds + 10 — 30 c,M. long, 

 + 2 — 5 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, cartilagineous, short-oblong, bluntish, 

 spreading or erecto-patent teeth or serratures in the younger or smaller forms, 

 sharply serra to-dentate throughout or towards the base only in the adult or 

 largest forms, which are not rarely subentire towards the apex. Texture coria- 

 ceous; surfaces naked; costa prominent beneath, more or less distinctly canali- 

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

 the smaller forms ; veins close, fine, simple or forked, connected by the cartila- 

 gineous edge or by fine, transversal veinlets near the margin. Fertile fronds 

 longer and narrower than the barren ones, not rarely suhsimilar to the latter 

 in the smaller forms, ± 1 5— 60 c.M. long, '/i — 1 Va ^•^^- broad, linear-lanceo- 

 late or linear, naiTowed very gradually towards both ends in the larger forms. 

 Sori occuping the upper '/j — "/lo of ^^o fertile fronds, reaching from the costa 

 to the cartilagineous margin, at length often confluent. — The description is 

 taken from the specimens gathered by Mr. Teuscher (described by Dr. Burck 

 as Acrostichum Borneense) and Dr. Nieuwenhuis (determined by Dr. Christ). 



Borneo. 



