APPENDIX. 22. DRi'OPTEBIS. 503 



varying from dark-brown to blacldsh; pinnae witli the segments paral- 

 lelogram, truncate or rotundate-trancate at the apex, more distinctly 

 piloso-paleaceous beneath. — I cannot distinguish from this a specimen 

 from Trinidad (America) received as A. filix mas var. parallelogrammum 

 (= A. paleaceum Sw.). — Scattered in the cool alpine regions of tropical 

 Asia and America. 



War. inarginata : Rachises nearly naked ; lowest pinnae often 

 2 — 3-pinnate; segments oblong, obtuse, serrate to deeply pinnatifid some- 

 times nearly to the costa. — Luzon; Central China., North India. 



(34**) D. eochleata, C. Cltr., Ind. Fil. ; D. fdi.v mas, Schott, var. 

 cochleata,, v. A. v. R., Mai. Ferns, 198; Lastrea cochleata, Moore, Bedd., 

 Ferns S. I., tab. CXV; L. filix mas, Pr., var. cocJHenta,. Bedd., Handb. 

 Ind. Ferns, 250, fig. 130; Aspidium filix mas, Sw., var. cochlealum, Christ, 

 Farnkr. d. Erde, 257 ; Nephrodium coehleatum, Don, (oldest name). 



Stipe and rachis paleaceous or often quite glabrous ; fronds dimor- 

 phous in the typical form ; barren fronds subdeltoid, pinnate, with the pinnae 

 deeply pinnatifid, and the segments provided with a sharp tooth on the 

 upper side near the apex; fertile fronds 1 — 2-pinnate, the leaflets con- 

 tracted, bead-Uke, serrulate; sori very large, completely covering the 

 under surface of the leaflets. 



Malacca; Brit. India. 



(59d) D. Escritoi'ii, ». A. v. n., in Bull. Btz., 1916, XXIII, 10. 



§ 2. NEPHRODIUM. 



(83) D. urophylla, c. Chr. 



Indusium fugacious or undeveloped, not rarely metamorphosed into 

 a bunch of short, setiform hairs. 



(84a) D. tandikatensis, v. A. v. R. 



Fronds to 45 cm. long except the auricles; pinnae to 4 on a side, 

 ovate-oblong to obovate-oblong, varying from entire to very coarsely and 

 irregularly toothed. — The systematical place of this species' should be 

 under No. 87c. 



(87c) See No. 84a. 



