﻿2^6 50. SCHIZOLOMA. 



Arrangement of the sections. 



§ 1. ISOLOMA. Veins free. Fronds always pinnate. 



§2. EUSCHIZOLOMA. Veins anastomising. Fronds sometimes simple. 



§ 1. ISOLOMA. 



ft. Pinnae roundish or oblong, 5 — 42^1^ m.M. long. 



h. Fronds to 20 c.M. long. Pinnae 4 — 6 m.M. broad. 



c. Pinnae + equal-sided, cordate or truncate at the base. 



(la) S. jamesonioidesi 

 {\b) S. angustum. 

 c.c. Pinnae unequal-sided, the upper base truncate, the lower one cuneate 

 or rounded. (2) S. ovatum 



h.h. Fully developed fronds to 30 c.M. long. Pinnae 7 — iO m.M. broad. 



(3a) S. induratum. 

 (36) S. fuligineum. 

 a.a. Pinnae linear-oblong or linear, i'/j — iO c.M. long. 

 §. Pinnae spreading, i\ — 2'^\^ c.M. long. 



•J". Sori not reaching the apex of the pinnae. (4) S. pellaeiforme. 



^."J". Sori continuous along the apex of the pinnae. (5) S. divergens. 



$.$. Pinnae erecto-patent, 3^j^ — dO c.M. long. (6) S. Walkerac. 



* (la) S. jameisonioideiS, Copel., Philipp. Journ., I, SuppL, 252 ; 

 Lindsaya Jamesonioides, Bk., Journ. of Bot., XVII, 39; Hk., Icon. PL, XVII, 

 tab. MDCXXVI; C. Chr., Ind. Fil. 



Rhizome short-creeping, the scales minute subulate, rigid, nearly black. 

 Stipes wiry, nearly black, 272 — 15 c.3I. long. Fronds linear, pinnate, 7 — 20 

 c.M. long, 1 — 2 c.M. broad, composed of sessile, contiguous, roundish or oblong, 

 alternate, spreading, deciduous, entire leaflets 4 — 6 m.M. broad, with the apex 

 rounded, the base rounded, broadly cuneate or truncate, those of the upper 

 ^3 of the frond growing gradually smaller. Rachis wiry, dark-brown; texture 

 coriaceous; surfaces naked, the upper one wrinkled; veins hidden. Sori con- 

 tinuous all round the edge or occupying the outer half of the pinnae; indusium 

 broad, chartaceous, persistent. 



Borneo, Celebes, 



