5S0 43. HISTIOPTEBIS. 



War. intcgrifolia: Pipnae petiolate; pinnulae sub-petiolate, long, 

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

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



acuminated apex. -^ ^. H -, ^^-O--^-^, /o€. a C... 



Panlropical and farther south. * / 



44. 0]VYCHIXJ]\I, ILavlfuss. 



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 & America. 



§. Sporangia yellow. 



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



*.*. Fronds 15 — 60 c.M. long. Indmium yellow. (2) 0. siliculosum. 



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



(1) O. temie, CHvist, Bull. Herb. Boiss., 2« S6rie, I, 451. 



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 o-lohate when sterile, lanceolate and acuminate 

 when fertile. Sori pale-yellow; indusium whitish. 



Java, New Guinea, Philippines. 



» (2) O. Silieulosiini, C. Cht-., Ind. Fil.; 0. aiiratum, Klf., Rac, 

 Flor. Btz., I, 163; Bedd., Ferns S.I., tab. XXX; Cryptogramme aurala, Prantl, 

 Diels, in Engl. & Prantl, Nat. fa-Fsm., 1\ ^19 ; Pterischrysocarpa{chrysosperma), 

 Hk. ^- Grev., Ic. Fil., tab. CVII; Pt. siliculosi, 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- 



