42 ASPIDIUM, 



the piniiic much resembles some forms of Aspid. (CyrtomiumJ falcaitim ; but 

 the venation is very different, and the terminal pinnae are not confluent. 



52. A. (Cyrtomium) nephrodioides, Hook. ; stipes a span 

 and probably much more long sulcated as well as the rachis 

 dirty straw-colour, frond 2 feet long ovate subniembrana- 

 ceous acuminate glabrous pinnated throughout, pinnae nu- 



^merous spreading 3-6-8 inches long by 1 broad sessile from 

 a broad base oblong-lanceolate uniformly and deeply pinna- 

 tifid three-quarters of the way down to the rachis into nume- 

 rous subhorizontally patent oblong acute subfalcate segments 

 obsoletely serrated h an inch long 1^ line wide slightly hirsute 

 beneath and on the costules and veins which are very patent, 

 the lowest pair of veins uniting and forming a single vein 

 which is prolonged to the sinus of the segments, the rest, 

 quite free, extend from the costule to the margin each bear- 

 ing a sorus nearer to the margin than to the costule, invo- 

 lucres distinctly orbicular peltate very thin and membrana- 

 ceous ochraceous dark brown in the centre the margin ci- 

 liated. (Tab. CCXXXV.) 



Hab. Indian Archipelago, Seemann. — This is a very beautiful and most distinct 

 Fern, brought home by Dr. Seemann on his return from the voyage of H. M. S. 

 Herald, but which by some accident was omitted to be noticed by that author in 

 his Botany of the Voyage. It has all the habit and venation (of the simplest kind) 

 of Eunephrodium of Schott and many recent authors ; but the involucres are per- 

 fectly orbicular and peltate. 



§ EuASPiDiUM.* — Primary veins arising from the costs generally straight, the 

 rest variously and compoundly anastomosing, the areoles with or without free 

 veinlets. Sori dorsal or terminal upon a free veinlet or compital. Involucre 

 orbicular, or not imfrequently more or less cordate or hippocrepiform. Fronds 

 often large, simple, pinnate or bi-tripinnate, or subpedately pinnate. Aspi- 

 dium, /. Sm. in Cidt. Fei-ns {not elsewhere). Aspidium, Schott, and Sagenia, 

 Pr. Bathmium and Cardiochlajna, Fee. 



* Fronds simple, tindivided. 



53. A. (Euaspidium) Sinffaporianum, Wall. ; caudex more 

 or less creeping very fibrous, stipites approximate sometimes 

 tufted 6-12-14 inches long sparsely setosely subulato-palea- 



* By the term Euaspidium here, I mean the Aspidiiim of Schott, and of most 

 modern authors who favour the great multiplication of Fern genera, none of them 

 unfortunately taking the same views, nor working in harmony with others. Met- 

 tenius adopts Swartz's Aspidium, including Nephrodium of Michaux and Brown ; 

 in other words, making no distinction between orbiculari-peltate involucres and 

 those which are cordate or reniform ; and such is the difficulty of distinguishing 

 in X\\t present section between cordate and orbicular involucres, that I am, as it 

 were, compelled to unite Sagenia, I'r., under the head of Euaspidium ; and, in- 

 deed, it is the opinion of many that botli kinds of involucres may be found on the 



