POLYPODIUM, § PHEGOPTERIS. 253 



inches lonn; 1-3 inches broad lanceolate bipinnato-pinnatifid, 

 primary piiuuc subopposite alternate above divergeiit subses- 

 sile rather remote lanceolate sharply acuminate, pinnules elon- 

 gate inocquilateral, lowest ones sessile obliquely and acutely 

 cuneate at the base adnate above decurrent at the inferior 

 base deeply pinnatifid, upper ones gradually confluent, seg- 

 ments spreading rather remote, lowest ones obliquely ovate, 

 the rest lanceolate rather obtuse at the apex, the margin ad- 

 pressedly denticulate, sinuses arcuate acute, veins simple, sori 

 on the middle of the back of the veins castaneous numerous, 

 universal rachis plane in front and margined convex at the 

 back clothed with lanceolate acute membranaceous hyaline 

 carneous scales black at the base/' Liebm. Fil. Mex. p. 54. 



Ilal). Oaxaca, IJebmann, alt. 2500 feet. — My specimens of this from the au- 

 thor, thougli fertile, are fragments without caudex, and without stipes. I do not, 

 however, recognize it as belonging to any known species, and can only describe 

 it in the author's own words. 



188. P. (Phegopteris) Mannianum^ Hook. ; caudex: short 

 thick erect or oblique densely clothed with ovate long-pointed 

 ferruginous scales, stipites tufted 6-9 lines long slender stra- 

 mineous (as well as the rachis) flexuose deciduously palea- 

 ceous with rather sparse delicate lanceolate squarrose scales, 

 fi'onds 6-10 inches long 2-4 inches wide ovato-lanceolate 

 membranaceous glabrous bipinnate below, pinnated in the 

 middle pinnatifid at the acuminated apex, pinnae subsessile 

 and nearly opposite distant, primary (lower) pinnee 2^-3 

 inches long f-1 inch wide from a broad base gradually but 

 obtusely acuminated pinnated near their base, the rest pin- 

 natifid, pinnules and segments ovate-oblong very obtuse 

 lobato-pinnatifid, lobes subentire or generally with one or 

 two distant teeth oti the margin below the blunt apex, supe- 

 rior pinnae resembling the inferior but the pinnai are united 

 by their decurrent and approximate bases, veins conspicuous 

 pinnated, veinlets distant simple or once or twice forked 

 bearing a sorus on the upper branch so as to form a lax 

 series of sori halfway between the costule or primary vein and 

 the margin. 



Ilab. Fernando Po, on the Peak, alt. 2000 feet, G. Mann. — A small species 

 with no very marked character, having somewhat the habit of Nephrodium (Las- 

 trea) crislalutn, but very different in other respects. 



189. P. (Phegopteris) Barterianum, Hook.; caudex small 

 erect paleaceous, stipites tufted yellow-brown a span long 



