472 Baker . — A Summary of the new Ferns 
278*. P. breve, J. Sm. ; P. jaintense, Clarke, in Trans. Linn. Soc. 
ser. 2, Bot. I, 552, tab. 82, fig. 4 ; Niphobolus brevis, 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. Am 
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, PL 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. prineeps, Mett. Larger than P. stigmosum , more coriaceous 
in texture, with tomentum not at all fimbriated. Patches of 
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, 
•Jg-— g 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. linear if olium, Hook. 
286. P, floccigerum, Mett. I do not now think this can be sepa- 
