48. POLYPODIUM, EUPOLYPODIUM. 331 



166. P. rigescens, Bory ; rhizome stout, creeping, densely clothed with dull- 

 brown linear scales ; st. 1-3 in. 1., wiry or slightly villose, naked ; fr. 6-12 in. 1., 

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

 pinnce in. br,, the lower ones reduced ; rachis black, wiry ; both surfaces naked, 

 the under one sometimes glaucous ; veinlets hidden ; sori in rows of 4 to 5 on 

 each side. Hlc. 8? Gr. Ic. t. 216. 



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 ia. br,, with 6-9 sori in a row. 



167. P. fuscatum, Blume ; st. tufted, 1-3 in. L, 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 pinnce % lin. br., the lower ones shorter and 

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

 hairs ; veins obscure, simple ; sori forming a close row on each side the midrib, 1 at 

 last filling nearly the whole surface. Hk. Sp. 4. p. 181, 



Hab. Java and Ceylon. 



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

 st. 1 in. or less 1., rigid, naked \fr. 6-12 in. 1., ^-1 in. br., cut down nearly or quite 

 to the rachis into entire linear blunt pinnce about 1 lin. br., 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. Uechnoides, Hk. ; rhizome stout, clothed with dense linear scales ; st. 

 2-3 in. 1., rigid, erect, naked ; fr. 8-12 in. 1., 1-1^ in. br., cut down very nearly 

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

 longer and narrower than the barren ones, which are bluntish, about g in. br., 

 growing gradually shorter and broader downwards ; texture coriaceous ; rachis 

 and both sides naked ; sori oblong, immersed, in rows near the midrib. Hk. Sp. 4. 

 p. 180. Cryptosorus Seemanni, J. Sm. 



Hab. Polynesian Islands and "Queensland. 



170. P. LobUanum, Hk. ; rhizome short-creeping, stout, densely scaly \fr. sub- 

 sessile, 4-6 in. 1., f-1 J in. br. ; pinnce 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. Hk. Sp. 4. p. 226. t. 278. B. 



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

 group. 



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

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

 horizontal nearly entire pinnce 1 in. br., narrowed gradually upwards ; texture 

 subcoriaceous ; under surface coated when young with white meaj, 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., 1^-2 in. br., cut 

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

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



