discovered or described since 1874. 89 



278*. P. laeve, Baker ; P. jaintense, Clarke, in Trans. Linn. Soc. 

 ser. 2, Bot. I, 552, tab. 82, fig. 4; Niphobolus laevis, Beddome, 

 Ferns Brit. Ind. 325. Khasia hills. Both Clarke and Beddome 

 agree in separating this as a species from P. adnascens. 



278*. P. Davidii, Baker, sp. n. Rhizome slender, wide-creeping; 

 paleae small, brown, lanceolate. Fronds homomorphous, 

 linear or lanceolate, 2-3 in. long, |-| in. broad at the middle, 

 narrowed into a distinct stipe, thinly tomentose beneath. Sori 

 small, mainly confined to the upper half of the frond, con- 

 tinuous from the midrib to the margin. Pekin, Father David, 

 558. Intermediate between P. adnascens and Lingua. 



278*. P. pachydermum, Baker, in Journ. Linn. Soc. XV, 108. 

 Little Kei Island, Moseley (Challenger expedition). 



278*. P. macropodum, Baker, in Journ. Linn. Soc. XV, 108. Aru 

 Islands, Moseley (Challenger expedition). 



280. P. Lingua, Sw. Has lately been traced northward to Man- 

 churia by Mr. James. 



282*. P. polydactylon, Hance, in Journ. Bot. 1883, 269. Formosa, 

 Hancock. Near P. tricuspe, Sw. 



282*. P. drakeanum, Franchet, PI. David. I, 355. China ; South 

 Chensi, Father David. Between P. stigmosum and Lingua. 



282*. P. Sheareri, Baker, in Journ. Bot. 1875, 201. Central China; 

 first gathered by Dr. Shearer ; since by Maries, Everard, and 

 Henry. 



283*. P. calvatum, Baker, in Journ. Bot. 1879, 304. Central China; 

 first gathered by Ford ; since by Henry and Faber. 



283*. P. princeps, Mett. Larger than P. stigmosum, more coriaceous 

 in texture, with tomentum not at all fimbriated. Patches ol 

 sori thicker and veins slanter and more raised. New Guinea, 

 Beccari. 



285*. P. angustissimum, Baker, sp. n. Rootstock slender, wide- 

 creeping, clothed with lanceolate pale brown adpressed paleae. 

 Stipe none or very short. Frond linear, rigid, 3-4 in. long, 

 yV~& in. broad, with revolute edges, bright green and naked 

 above, densely coated below with thick woolly tomentum. 

 Veins quite hidden. Sori small, confluent, covering the whole 

 surface of the upper part of the frond. Patung, China, Henry, 

 5137. Habit of P. lineari/olium, Hook. 



286. P. floccigerum. Mett. I do not now think this can be sepa- 



