48. POLYPODIUM, NIPHOBOLUS. 351 



than the type and narrowed more gradually below, and P. princeps, Mett., from New 

 Guinea, has the scales divided at the point into 3-4 cilise, and is thinner in texture, with 

 more adpressed tomentum, and more numerous sori and areolse. 



284. P. (Niph.) subfurfuraceum, Hk. ; rhizome short-creeping, clothed with 

 deciduous ferruginous fibrillose scales ; st. 4-6 in. 1., firm, erect ; fr. 1^-2 ft. 1., 

 4-5 in. br., the apex acuminate, the lower part narrowed gradually, the edge 

 entire ; texture coriaceous ; upper surface naked, lower with thin glaucous tomen- 

 tum ; main veins distinct to the edge, connected by arched areolse, with 1 or 2 

 irregular rows of 6 to 10 sori in each. Hk. Sp. 5. p. 52. 



Hab. Mishmee and Bhootan, Griffith. 



ft Tomentum thicker, more woolly, and looser. Sp. 285-296. 



285. P. (Niph.) nummularicefolium, Mett. ; rhizome slender, wide-creeping, 

 filiform, clothed with bright-ferruginous fibrillose scales ; st. erect, J-l in. 1., 

 often scaly ; fr. dimorphous, the barren ones roundish or elliptical, the fertile 

 ones longer and narrower, 1^-2 in. L, - in. br. ; texture subcoriaceous ; upper 

 surface naked, lower densely coated with loose ferruginous woolly tomentum ; 

 main veins distinct, connected by 4 to 6 arched areolae ; sori close, scattered, some- 

 times covering the whole surface. Hk. Sp. 5. p. 54. Galeoglossa, Presl. 



Hab. N. India (up to 2,000 ft.), Neilgherries, Philippines, Malaccas. P. obovatum, - 

 Mett., is said to be like this, but to have the fertile fronds similar in shape to the barren 

 ones, and both obovate-oblong. 



286. P. (Niph.) floccigerum, Mett. ; rhizome wide-creeping, the scales squarrose, 

 lanceolate-acuminate, bright-ferruginous ; st. very short ; fr. 6-12 in. 1., ^-\ 

 in. br., narrowed gradually to both ends, the edge entire ; texture rigid, coria- 

 ceous ; upper surface naked, lower densely matted with subferruginous tomen- 

 tum ; veins hidden ; sori immersed amongst the tomentum, covering the whole 

 upper part of the frond. Hk. Sp. 5.p, 45. Antrophyum niphoboloides, Hk. Sp. 5. 

 p. 94. 



Hab. N. India, Philippines, Malaccas. Most like 2V. porosum, but the frond much 

 narrower and texture more rigid. 



287. P. (Niph.)ymzm, Baker ; rhizome stout, short-creeping, the scales dense, 

 spreading, lanceolate, ferruginous ; st. none, or very short; fr. 6-12 in. 1., -|-]|- 

 in. br., narrowed very gradually to both ends, the edge entire ; texture subcori- 

 aceous ; upper surface naked, lower densely coated with soft woolly ferruginous 

 tomentum ; veins hidden ; sori close, scattered, immersed amongst the tomentum. 

 Niphobolus, Bl. P. porosum, Watt. Hk. Sp. 5. p. 48. 



Hab. Himalayas (5-6,000 ft.) to Ceylon and Java. Characterized by its strapshaped 

 subsessile fronds, very woolly beneath. 



288. P. (Niph.) flocculosum, Don ; rhizome short, the scales linear-subulate, pale- 

 ferruginous ; st. 4-6 in. L, firm, erect, cottony upwards \fr. 6-18 in. L, f-1^ in. br., 

 narrowed very gradually to both ends ; texture coriaceous ; upper surface naked, 

 lower densely matted with close glaucous or subferruginous tomentum ; main 

 veins distinct to the edge ; sori small, bright-coloured, in straight rows of 4 to 6 

 each between them. P. detergibile, Hk. Sp. 5. p. 49. 



Hab. N. India, ascending to 5,000 ft. 



289. P. (Niph.) africanum, Mett. ; rhizome stout, densely clothed with large 

 grey ovate scales ; fr. subsessile, 6-12 in. L, -! in. br., narrowed gradually to 

 both ends, the edge entire ; texture coriaceous ; upper surface naked, lower densely 

 coated with close nearly white woolly tomentum ; veins immersed ; sori close, 



