THE FERNS OF NORTH-WESTERN INDIA. 85 



immense lately received in a very young state show ciliated involucres on 

 almost all the sori ; and that Mr. Mann's specimens from the Nambur Forest, 

 Assam, have the pinnas 2£ inches broad. If in. is, I think, the broadest I 

 have of P. multilineatum. 



Subgenus Eupolypoditjh. 



13. P. SUbfalcatum, Bl. ; Syn. Fil. 328 ; C. P.. 449, Bedd. H.B. 314. 

 N.-W. P.— B. Garh., Mackinnons 1882 ; Kumaun— Kalimundi 8500', S. and W., 



No. 19 ; P. part of Wall. 310 ; named P. sub/aloatum by Sir W. J. Hooker. Above Gini 

 6-7000', near Sosa 9-10,000', Duthie 1884. North India, Edgeworth, /frfd Hooker. 



Disteib.— Ana : N. Ind. (Him.) Nepal, Wallich, Central Nepal, J. Scully 1880. 

 Sikkim and Bhotan, common ; Assam — Khasia 4-5000', frequent. S. Ind. — Nilgiris 

 and Anamallays 4-5000'. Ceylon— Centr. Prov. Malay Penins. 3-4000', and Isles. 

 Philippines, Cuming ; Borneo ; Moluccas — Batjan Isd. ; New Guinea, Beccariect. 



Subgenus Goniophlebium, Bl. 



14. P. amoenum, Wall. ; Syn. Fil. 341 ; C. R. 550. Goniophlebium 

 amamurn, Wall, (under Polypodium) i Bedd. H. B. 317. 



Punjab : Chamba, MeDonell ; 5-8000', J. Marten 1897 ; Kangra Vy. But. 8000'; 

 Kullu 6-8000', Trotter, Coventry ; Simla Beg. — Simla and neighbourhood, and east- 

 ward along Thibet Road to Bisahir, 6-9500', T. T,, Edgeworth, Bates, Hope, Gamble, 

 Blanf, Trotter, Bliss, Lace ; Sirmur, T. T. 



N.-W. P. : B. B. Bist.— Jaunsar, Dakera 5500', C.G. Rogers, Harianta 8500', Gamble 

 1898 ; Mussooree— ' The Park 1 Hope ; Landonr— Seal's Hill 7000', Hope ; T. Garh. Nag 

 Tiba Mt. 9000', Mackinnons ; Ganges Vy. 7-8000', Duthie, Datuni 7000', Gamble ; 

 "Garhwal" Griffith 1845 ; B. Garh., Mrs. Fisher ; Kumaun—K&thi 7500', Jagesar 

 6000', S. & W. , near Naini Tal 5500' Hope ; above Ramgarh 7000', Trotter ; Kala 

 Muni Ridge 9500', MacLeod. 



Distrib. — Asia : N. Ind. (Him.) Nepal, Wallich ; Sikkim and Bhotan ; Assam — 

 Khasia Dist. 3-6000', very common ; Manipur G. Watt. China, Henry, Hancock ; 

 Formosa (doubted by Clarke). Tonkin, Balansa. 



Mr. Clarke can distinguish this fern from some large specimens of P. laclinopm 

 Wall. (No. 15 below) only by the scales (on rhizome ? ) not being hair-pointed : 

 he says there is no difference between the two, and he has P. lachnopm exceed- 

 ingly large. One does not need to look at the scales to distinguish between the 

 two species. P. amcenum has a broadly lanceolate frond— iwice to thrice, 

 rarely more— as long as it is broad : P. lachnopm is linear-lanceolate, commonly 

 six to seven times as long as broad, and larely is the breadth so much as 

 one-fifth of the length : loin. 1. by 2in. broad are common dimensions, and I 

 have a frond 21 in. by 3 in. The number cf pinna3 (or lobes) in the two 

 species is considerably different : in amcenum, it is sometimes less than 20, gene- 

 rally 25-30, and very rarely reaching 25-40 ; in lachnopas the number is rarely 

 below 30, and frequently reaches 45 or more. In amcenum the costa3 of the 

 segments are from | in. to ]| in. apart, and the segments gradually taper from 

 a broad base to a generally very fine point : in lachnopus the costas are generally 



