﻿350 45. HISTIOPTERIS. 



War. iiitc^rifolia: Pinnae petiolate; pinnulae sub-petiolate, long, 

 linear, acuminate, entire, obliquely cordale at the base, the basal pair not 

 auricle-like, distant from the rachis. Sori continuous almost to the finely 

 acuminated apex. 



Panlropical and farther south. 



44. OlVYOHlXJlVr, Uaulfuss. 



Sori linear, submarginal, on a continuous receptacle connecting the vein 

 tips. Tndusium consisting of the reflexed, modified margin, broad enough to 

 reach + the costa. Spores tetrahedral. 



Rhizome creeping. Stipes pale-coloured or brown, with 1 — 2 vascular 

 strands, not articulate to the rhizome. Fronds finely divided, fertile and sterile 

 divisions + unlike; veins free. Hk. Bk., Syn. Fil., tab. Ill, fig. 27. 



Tropical and extra-tropical Asia, Africa k America. 



$. Sporangia yellow. 



^. Fronds iO — i5 c.M. long. Indusium whitish. (1) 0. tenue. 



:4c.>tc. Fronds 15 — 60 c.M. long. Indusium yellow. (2) 0. siliculosum. 



§.$. Sporangia brown. (3) 0. japonicum. 



(1) O. lenue, Cht-ist, Bull. Herb. Boiss., 2« S6rie, I, 4S1. 



Rhizome short, erect. Stipes densely tufted, + 5 c.M. long, slender. 

 Fronds 10 — 15 c.M. long, narrowly ovate. Pinnae and pinnulae erect; ultimate 

 segments narrow, cuneate and 3-lobate when sterile, lanceolate and acuminate 

 when fertile. Sori pale-yellow; indusium whitish. 



Java, New Guinea, Philippines. 



* (2) «. iSilieuloiSiiiii, C. Chr., Ind. Fil.; 0. avratum, Klf., Rac, 

 Plor. Btz., I, 163; Bedd., Perns S.I., tab. XXX; Cryplogramme aurala, Pranll, 

 Diels, in Engl. & Prantif^at. VR.Fsim.,V, ^19; Plerischrysocarpa{chrysosperma), 

 HIi. <^ Grev., Ic. Fil., tab. CVII; Pt. siliculosa, Desv., (oldest name). 



Rhizome short, creeping, clothed with subulate-lanceolate, brown, spreading 

 scales. Stipes 10 — 35 c.M. long, stout, erect, naked, stramineous or pale- 



