THE HERNS OF NORTH- WESTERN INDIA. 
157 
glabrous. Finn, about 20 pairs, rarely more or less, distant, sub- 
patent or ascending at an angle of less than 45°, lowest few pairs* 
sometimes widest at one-third from main rhachis, others hardly 
diminished towards base, and with lowest pair of pinnules some- 
times elongated, always accuminate, 6-1 1 £ in. 1. by — 3f in. 
br. Pimls. 20 or more pairs on longest pinnae of large fronds, 
cut away at the base on the inferior side, and slightly aurieled on 
the superior side, § — \ in. br, at base, cut down two-thirds 
towards costa into 6-12 lobes with two or more teeth each, 
gradually narrowing and sometimes blunt at apex, decurrent on 
rhachis with sometimes a broadly winged base. Texture her- 
baceous. Colour , when dried, pale olive-green. Ven. of pinnules 
pinnate, and veinlets forked in the lobes, pinnate in the lowest. 
Sort mostly one on superior veinlet of each lobe, near to or at some 
distance from costa of pinnule, but more numerous in lowest 
lobes of large pinnules ; involucres large, straight, athyrioid, or 
hippocrepiform, and sometimes severed at the curve. Plate 
XXIII. 
Hab. Asia : Trans-Indus Protected States : — Baraul 8500, Harriss 1895 ; 
Kashmir, W. : 6-10,000', Trotter 1888, MacLeod 1891, McDonell 1892-98 
Duthie (several stations) 1893. Punjab : Ckamba— 7-9000', * Baden- 
Powell 1879, McDonell ; Simla Region , 8200' and upwards, Blanford 
1885, Hope 1886, Bliss 1390-91. N.-W. Provinces : Mussooree or neigh- 
bourhood, Herschel 1878; Tehri Garhwdl State 8000', P.W. and V. A.; 
Mackinnon 1879 ; 10,000'. Davidson 1875, ; 3-9000', Duthie 1883 
7500, Gamble 1894 ; Kumaun : 9-10,000', Duthie 1884. Bengal 
Sikkim, Phulloot 11,500'. Levinge 1880 (Gamble’s No. 8538). 
A large broad-spreading fern, with a long stipe, and when dried 
reminding one of Nephr odium marginatum Wall., and me some- 
times of N. ramosum , Hope. The scales at base of stipe are like 
those of A. nigripes Mett., but pale in colour, as is the frond. 
The sori do not lie in rows parallel to and near, the costa, like 
those of A. nigripes , but are generally apart from it, curving out- 
wards, and the involucres are generally much more curved. No 
doubt specimens of this fern are to be found in herbaria mixed 
with A. nigripes , but I think they ought to be separated. I 
erroneously entered it in the Saharanpnr catalogue as A. sele- 
nopteris i Kze., but I must now separate them, and I name the 
species after the brothers Mackinnon of Mussooree, in whose 
collection I first saw it, and whose specimens are the largest I 
have seen,, and also because they have largely added to the 
