THE FERNS OF NORTH-WESTERN INDIA, 
263 
N.-W. P : D. D. Did . — Musseoree and Landour 6-7500', everywhere, on rooks and 
trees ; B. Garb., Mrs. Fisher ; Kuvtaun — Jagesar COCO', S. and W.; Naini Thl ; Eali 
Vy. 9-10,000', Duthie ; Goriganga Valley 7000', MacLeod. 
Distrib. — Asia : N. Ind. (Him.) Sikkira and Bhotan ; Assam — Jakpho Mt. 
9000', Clarke : China — Yunnan, Delavay, Henry. 
Besides the difference in the scales of rhizome between this species and 
P. lachnopus , distinguishing characters of microrrhizoma not mentioned by 
Mr. Clarke are— the brown stipes, and darker brown rhachis ; the broader, 
shorter, and rather stouter frond ; pinnae much fewer— generally only 15-25 
pairs — and broader ; and sori often oblong or oval. At Mussooree this fern 
grows to a higher level than P. lachnopus. The rhizome does not strike me as 
being very small. 
17. P. argutum, Walk ; Syn. Fil. 511 ; C. R. 551. Gcniophlebhim 
argututn , Wall, (under Polypodium ), Bedd. H. B. 323. 
N.-W. P. : D.D . Dist. — Mussooree (1500', Hope 1885 ; T. Garli . — Nag Tiba Mt. 8000' 
Macktunons 8000' ; B. Garli. 6-7000', Duthie 1885, Mrs. Fisher ; Kumaun , R. Bl. ; 
Binsar, on trees, 7000', S. and W. 1848, and Major Madden; Naini Tal 5-8000', on 
trees, Hope 1861, Davidson 1875 ; between Gini and Mnnshiari 7-8000', above Gini 
6-7000', and Gori Vy. 7-8000', Duthie 3884 ; above Lonarkhet 7600', Trotter 1891 ; 
Ranti and Kala Muni Ridge 7-10,000', MacLeod 1898. 
Distrib.— A sia : N. Ind. (Him.) Nepal, Walliali 1S29 ; Sikkim and Bhotan, 
4-9000', very common ; Assam — Kliasia. 
Mr. Clarke gives— 1 “ Himalaya, from Kashmir to Bhotan, very common ” as 
habitats for this species, but I cannot find any specimens from the westward 
of Tehri Garhwal in the N.-W. Provinces, nor did Mr. Trotter ; and Mr. 
Blanford is silent as to the Simla Region. The Jaunsar Tract of the Debra 
Dun District also seems a blank. 
My plant from Mussooree is from the only known station in, or within, two 
days’ journey of that place : it must be 10 or 15 miles from Nag Tiba Mt. in 
a straight line across the deep valley of the Aglar River. I found the fern in 
Mussooree on one branch of one Rhododendron [ arboreum ) tree only, and left 
most of the rhizome and fronds on it, and it was still there in 1895, but did not 
appear to have spread to other trees. P. argutum was pretty common in 
Naini Tal in 1861, on the Sher-ka-danda side of the Lake, high up. 
Subgenus Niphgbolus, Amt. 
19. P. adnasoens, Sw. ; Syn. FiL 349; C. R. 552. Niphololus 
adnasems , Sw. (under Poly podium), Bedd. H. B. 324, 
N.-W. P. : B. Garh. 3-4000', P. W. Mackinooti 1881 ; Kumaun — BatngangaR. 2500. 
S. and W.; 4-5000' and 3-4000', Duthie 1884; Sarju Vy. 8500', Trotter 1891; “Gori- 
ganga Valley and elsewhere," 5-8000', MacLeod 1898. 
Distrib.— Asm : Throughout N. India in moist climates/” Clarke. Himalaya— up 
to 5000' and even 8000' : “ extending over the plains to Calcutta and the sea-face of 
the Soonderbitu" ; Aspam— Kachar, Mishmi Griffith^ Manipur, Watt. S. Ind. Burma— 
