APPENDIX. y. TEICHOMANES. 499 



divided fronds 5—20 mm. long, 3 — 20 mm. broad, with the primary 

 segments erect, erecto-patent or spreading; ultimate segments varying 

 from very short to 1 5 mm. long, similar to the higher part of the simple 

 fronds. Texture very thin; surfaces naked; a single central rib carried 

 into each segment; spurious venules copious, scattered irregularly, short, 

 straight or slightly curved or flexuose, erecto-patent or parallel to the 

 costa, costula or margin. Sori 1 or more; solitary and terminal on the 

 simple fronds or the segments of the divided fronds; indusium infundib- 

 uliform, quite sunk, the mouth dilated, spreading, scarcely 2-valved; 

 receptacle not or shortly exserted. 

 Amboina. 



§ 2. HYDROGLOSSUM. 



(14) li. Wersleegii, Christ. 



Also in Luzon. 



IS. OLE^^IVDU-A, Cavanilles. 



(4) O. nci'iiforiuis, Cav.i Aspidium neriiforme, Sw., Kze, Farn- 

 kr., I, tab. XVIII. 



(6) O. IVallichii, Pr.s Aspidium WallicJiii, Hk., Kze, Farnkr., 

 I, tab. XIX. 



±T. J>fE3I»HIS-OL.EPIS, Scholt. 



§ 2. EUNEPRHOLEPIS. 



(116) M, Thoinsoni, ». A. v. K., in Bull. Btz., 1917, XXIV, 2. 

 Near N. radicans KuJm but the fronds to 150 cm. or more long and 



