NEPimODlUM, § LASTREA. 139 



vision of the pinna:, pinnules, and segments. Mettenius lias distinguished three 

 varieties as obtusilobum, serratum, and acittilobiim ; but these three forms, and 

 others, too, may be seen on one and the same frond. 



133. N. (Lastrea) s/^Z/fprocor/^?/???, Hook. ; caudex ?, stipites 

 slender 4-5 inches long laxly paleaceous with large scales at 

 the base stramineous as well as the main rachis and glossy, 

 fronds ovato-lanceolate rarely subdeltoid acuminate a sj)an 

 to a foot long membranaceous uniformly tripinnate, primary 

 pinnee distant petiolate 3-4 inches long from a l)road base 

 oblong acuminate, secondary pinntc also shortly petiolate 

 ovato-oblong bluntly acuminate distant h an inch to ] inch 

 long rarely more, deeply pinnatifid in the upper half pin- 

 nated below, segments or pinnules 2-3 lines long oblong 

 contracted at the base entire or sublobato-serrate, serratures 

 acute, veinlets forked, sori general one at the base of each 

 lobe or pinnule, involucres large cordato-reniform at first plane 

 at length very convex with a deep sinus^ one of the lobes 

 sometimes elongated. — Athyrium sphaerocarpum, Fee, Gen. 

 Fil. p. 186. Moore, Ind. Fil. p. 188. Aspid. athyroides. 

 Mart, et Gal. Fil. Me.r. p. 67- i. 18. Lastrea, Liehm. Fil. 

 Mex.p.\22. — \siV.glandulosum ; frond larger subdeltoid punc- 

 tato-glandulose beneath. Lastrea Mexicana, Liebm. in Herb, 

 nostr. 



Hab. Mexico, Galeofti,n.642b, Coulter,n. 1699 and niQ.—^ar. glandulomm ; 

 Mexico (Lastr. Mexicana, Liebm. in Herb. wos<r.).— Different as are the speci- 

 mens of Gaieotti and Coulter from TV. Meocicanum, I am far from feeling sure 

 that this Fern is not one of the many forms of that variable species. Liebmann, 

 who seems to know Galeotti's plant, has, according to my views, taken a broad- 

 fronded and glandulose var. of this for true Mexicana. It is evidently of the same 

 group with that, and the involucres are of the same nature. 



134. N. (Lastrea) deparioides. Hook.; stipes slender 1-1^ 

 foot long very paleaceous below with large lanceolato-subu- 

 late brown scales, frond 2 feet long ovato-acuminate mem- 

 branaceous glabrous bipinnate, primary pinnse 4-5 inches 

 long broad-lanceolate petiolate acuminate, pinnules about an 

 inch long rather distant ol)liquely rhombeo-ovate acuminate 

 laciniato-pinnatifid unequally cutieate at the base and there 

 subauricled above, the segments or teeth each bearing a soli- 

 tary sorus at the very extremity terminating a veinlet, invo- 

 lucre larger than the tooth which bears it convex cordiform 

 with a deep sinus. — Hook. Fil. Exot. t. 3. Diclisodon depa- 

 rioides, Moore, Ind. Fil. p. xcv. and 31G. 



Hab. Ceylon, Thwaites, C. P. n. 3062. Anamally Hills, S. Penins. of India, 



