﻿368 45a. pteris. § 1. eipteris. c*. bipinnatifiDae. 



Texture moderately firm; surfaces naked; rachises dark-coloured; veins copi- 

 ous. Sori nearly reaching the apex of the segments; indasium narrow, 

 naked. 



Borneo. 



* (28) l*t. decusisata, J. Sm., Journ. of Bot., Ill, 405 ; Pi. patens, 

 HL, Hk. Bk., Syn. Fil., 165; Hk, Spec. Pil., II, tab. CXXXVII; Bedd., Perns 

 S.I., tab. CCV. 



Stipes tufted, stout, scaly at the base, glossy, rather dark-brown. Fronds 

 large, 90 — 120 c.M. long, 60 c.M. broad or broader. Terminal pinna 15 — 25 

 c.M. long, 3^2 — 7 '/a c.M. broad, with several, + horizontally spreading, linear 

 lobes on each side reaching down nearly or quite to the costa, dilated sud- 

 denly on both sides at the base, the barren ones slightly serrate or crenate. 

 Lateral pinnae numerous, similar to the terminal on but longer, sometimes 

 45 c.M. long, to 5 c.M. broad, the lowest forked. Texture thinly coriaceous ; 

 rachis and both surfaces naked; veins oblique, the lowest sometimes anasto- 

 mosing (Christ, Farnkr. d. Erde, 168), commonly once forked. Sori continued 

 nearly to the end of the segments. — I am sceptical to the anastomosing of 

 the veins. A plant gathered in Borneo by Hallier and determined by Christ 

 as Pi. paiens, Hk., (Ann. Btz., XX, 130) has the fronds smaller, the veins quite 

 free and the costae purveyed with 2 interrupted, narrow wings on the upper 

 side. (See Bedd., Handb. Ind. Ferns, 114, line 3 from bottom). 



Malacca, Borneo, Celebes, Philippines; Ceylon, Samoa, Society-Islands 



(29) Pt. ^l¥alkeri, J»fe., Journ. of Bot., XXVI, 324. 



Stipes naked, castaneous, 15 — 20 c.M. long. Fronds rhomboidal, irregu- 

 larly 3-pinnate, ± 30 c.M. long. Pinnae usually caudate, terminal and high- 

 er ones simply pinnate, several lower forked at the base. Ultimate segments 

 obtuse, at utmost + 2 c.M. long, + 2 m.M. broad. Texture moderately 

 firm; surfaces naked; rachises castaneous; veins copiously pinnate in the ul- 

 timate segments; veinlets indistinct. Sori occupying nearly the whole margin 

 of the segments; indusium narrow, naked. 



Borneo. 



* (30) l»t. e:!Kcelsa, Gawd., Rac, Flor. Btz., I, 155; Hk., Spec. 

 Pil, II, tab. CXXXVI; Bedd., Ferns Br.I., 11, tab. CCXVIII. 



Rhizome erect, short, densely clothed with narrow, lanceolate, brown 

 scales. Stipes tufted, naked, erect, stout, reddish, greenish or pale-brown, to 



