276 30. SCHIZOLOMA. 



Arrangement of the sections. 



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



§ % EUSCHiZOLOMA. Veins anastomosing. Fronds sometimes simple. 



§ 1. ISOLOMA. 



a. Pinnae roundish or oblong, 5 — iJ^'/j rn.M. long. 



b. Fronds to 30 c.M. long. Pinnm ^t 6 m.M. hmad . 



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



(la) S. jamesonioides. 

 (lb) S. angustum. 

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

 or rounded. (2) S. ovatum 



b.h. Fully developed fronds to 30 c.M. long. Pi n mo 7 — 40 m,M, brot t dv 



e. TU~«ju> .t<^^^*^eXt^\rc^ s c^/Vi,,t^ iux^tt. (3a) S. induratum. 

 c^c_. U'-*t^KAf e>-6^pi^xjj '^-et«fc,^^«^«.«€a-f«>'.(36) s. fuligineum. 



a.a. Pinnaepiinsar-Manapr linear, i\ — iO c.M. long. 

 §. 'Pmnae ^spreading, f^/j — 2^1^ c.M. long. 



f. Sort not reaching the apex of the pinnae. (4) S. pellaeiforme. 

 ^.^•. Sort continuous along the apex of the pinnae. (5) S. divergens. 



§.$. Pinnae erecto-patent, 3%—iO c.M. long or longer. (6) S. Walkerac. 



* (la) S. jainesonioitleii, CopeL^ Philipp. Journ., I, Suppl, 252 ; 

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

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



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

 Stipes wiry, nearly black, 2*/2 — 15 c.M. long. Fronds linear, pinnate, 7 — 20 

 c.JI. 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 

 '/j 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; indusiuin 

 broad, chartaceous, persistent. 



Borneo, Celebes. 



