48. POLYPODiUM, §§§§§ EuroLYroDnjM. 331 



16(5. P. rigescens, Bory ; rhizome stout, creeping, densely clothed with duU- 

 hrown linear scales ; st. 1-3 in. 1., wiry or slightly villose, naked ; fr. G-12 in. 1., 

 I in. or more br., cut down to the racliis into close entire blunt linear-oblong 

 jjinnw J in. br., the lower ones reduced ; rachis black, wiry ; both surfaces nakecl, 

 tiie under one sometimes glaucous ; veinlds hidden ; sori in rows of 4 to 5 on 

 each side.— i7/{-. ^ Gr. Ic. t. 21G. 



Hab. Cuba to Chili and Brazil ; Bourbon, Fernando Po. — A plant from Dr. Spruce 

 has a rigid rhizome 2 ft. 1., clothed with large ovate-lanceolate scales, and the fronds are 

 quite sessile ; and another has fronds 18 in. 1., 2 in. br., with G-9 sori in a row. 



167. P. fuscatum, Blume ; st. tufted, 1-3 in. 1., densely clothed with soft spread- 

 ing hairs ; fr. 3-6 in. 1., ^-1 in. br., cut down nearly or quite to the rachis 

 throughout into close entire obtuse pmnce J lin. br., the lower ones shorter and 

 broader ; texture subcoriaceous ; rachis and both sides thinly clothed with soft 

 hairs ; vei?is obscure, simple ; sori forming a close row on each side the midrib, at 

 last filling nearly the whole surface. — HL Sp. 4. ]). 101. 



Hab. Java and Ceylon. 



168. P. decorum, Brack. ; rhizome creeping, densely clothed with linear scales ; 

 St. 1 in. or less 1., rigid, naked ;/r. 6-12 in. 1., ^-1 in. br., cut down nearly or quite 

 to the rachis into entire linear blunt pinnce about 1 lin. hv,, the lower ones growing 

 gradually shorter and blunter ; texture coriaceous ; both sides naked, or the rachis 

 hispid ; veins obscure ; sori immersed, in 2 rows of 4 to 6 each, filling up the 

 whole space between the midrib and edge. — Hk. Sp. 4. p. 179. 



Hab. Ceylon, Malaya, and Philippines to Tahiti and Sandwich Isles. — This is referred 

 to P. nutans (Blume) by Mettenius, but the figure and description do not quite agree 

 with it. 



169. P. blcchnoides, Hk. ; rhizome stout, clothed with dense linear scales ; st. 

 2-8 in. 1., rigid, erect, naked ; fr. B-12 in. 1., 1-1^ in. br., cut down very nearly 

 to the rachis throughout ; fertile jnnnw confined to the upper half of the frond, 

 longer and narrower than the barren ones, which are bluntisli, about \ in. br., 

 growing gradually shorter and broader downwards ; texture coriaceous ; rachis 

 and both sides naked ; so;7' oblong, immersed, in rows near the midrib. — Hk.Sp. 4. 

 p.*180. Cryptosorus Seemanni, J. Sm. 



Hab. Polynesian Islands and Queensland. 



170. P. Lobbianum, Hk. ; rhizome short-creeping, stout, densely scaly ;/r. sub- 

 sessile, 4-6 in. 1., |-lj in. br. ; jnnnce numerous, close, \ lin. br., the edge with 

 distinct rounded crenations, lower ones gradually reduced ; texture coriaceous ; 

 rachis wiry, ebeneous ; both sides quite naked ; veinlets simple, indistinct, 1 to 

 each lobe ; sori immersed, small, copious. — Sk. Sp. 4. p. 226. t. 278. B. 



Hab. Borneo, T. Lobh. — This and the three last are the most rigid in texture of the 

 group. 



171. P. argyratum, Bory ; rhizome stout, the scales linear, ferruginous ; st. 2-3 

 in. 1., wiry, naked ; fr. 4-6 in. 1., 1^-2 in. br., cut down to the rachis into close 

 horizontal nearly entire pinncB i in. br., narrowed gradually upwards ; texture 

 subcoriaceous ; under surface coated when young with white meal, which dis- 

 appears as the plant grows older, for the rest naked ; veinlets immersed ; sori 

 marginal, 4 to 8 on each side. — Hk. Sp. 5. p. 198. 



Hab. Bourbon and ^Mauritius. 



172. P. Skinneri, Hk. ; rhizome wide-creeping, clothed with broad pale ad- 

 pressed scales ; st. 2 in. 1., rigid, deciduously scaly ; fr. 6-9 in. 1., li-2 in. br., cut 

 down nearly or quite to the rachis into numerous close horizontal linear slightly 

 crenated pinnce not more than 1 lin. br., with a rounded sinus between them ; 



