﻿4. T>ICItS03Vl^5 VBiritier. 



Sori roundish or transversally suboblong, terminal on the veins, sub- 

 marginal. Indusium 2-valved, the outer valve consisting of a conspicuously 

 cucullate, small lobe of the frond, forming with the inner valve a saccate 

 involucre to the sorus, the inner valve being of another texture than the 

 outer one. 



Caudex arborescent. Fronds compound, ± elongate as are the segments ; 

 veins free. Diels, in Engl, k Prantl, Nat. Pfl.Fam., P, fig. 78, B— D. 



Tropical and subtropical. 



* O. Itliinici, Moore, C. Chr., Ind. Fil. ; D. chrysotricha, Moore, 

 Rac, Flor. Btz., I, 121 ; Balantium Blumei, Kze, (oldest name). 



Caudex arborescent. Stipes to 80 c.M. long, densely pilose like the 

 rachises and costae, the base covered with long, yellowish or brownish hairs 

 to 3'/2 c.M. long. Fronds 5-pinnatifid to 3-pinnate, to 3 M. long, narrowed 

 towards both ends. Pinnae 50 — 75 c.M. long, 15 — ^15 c.M. broad, erecto- 

 patent, on stalks to 1 '/i c.M. long, oblong-lanceolate, acuminate. Pinnulae + 

 sessile, approximate, linear-lanceolate, acuminate, the lowest not the longest, 

 15 — 20 m.M. broad at the base. Tertiary segments erecto-patent, linear-oblong, 

 obtuse, 3 — 4 m.M. broad, free or slightly joined at the base; the barren ones 

 decurrent, toothed, the teeth acute, entire or slightly denticulate; the fertile 

 ones deeply incised, the lobes rounded, cucullate, forming the outer valve of 

 the indusium. Texture coriaceous; surfaces naked, except on the costae or 

 costulae beneath; veins simple or forked. Sori numerous, 1 to each lobe, 

 transversally suboblong; inner valve of the indusium + cucullate, brown, 

 firm-membranaceous, at length reflexed. 



Java, Celebes. 



S. CIBOTIXJM, Uaulfuss. 



Sori roundish or oblong, terminal on the veins, submarginal. Indusium 

 2-valved, the outer valve similar to the inner one, distincly differentiated from 

 the margin of the frond, forming with the inner one a saccate involucre to 

 the sorus. 



