THE FERNS OF NORfH-WESTERN INDIA. 123 



glabrous. Finn, aboufc 20 pairs, rarely more or less, disfcani;, sub- 

 patent or asoendiug at au angle of less than 45°, lowest few pairs 

 sometimes widest at one-thii'd from main rhachis, others hardly 

 diminished towards base, and w ith lowest pair of pinnules some- 

 times elongated, always accuminatc, 6-11 J in. 1, by 1^ — 8f- in. 

 br. Pinnh. 2o or more pairs on longest pinnse of large fronds, 

 cat away at the base on ths. inferior side, and f^lightly am-icled on 

 the superior side, f — J 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, decun-ent on 

 rhaohis with sometimes a broadly winged base. Texture her- 

 baceous. Colour, when dried, pale olive-gTeen. Ven. of pinnules 

 pinnate, and veinlets forked in the lobes, pinnate in the lowest. 

 Son 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. 

 "Hcib. Asia: Trans-Iudus Protected States :— Baraul 8500, Harrissl895; 

 Kashmir,^. : 6-10,(iOO', Trotter 1888, MacLeod 1691, McDonell 1892-93 

 Duthie (several stations) 1893. Punjai : t'^awiSa— 7-9000', Baden- 

 Powell 1879, McDonell : Simla Region, 8200' and upwards, Blanford 

 1885, Hope 1886, Bliss 1390-91. N.-W. Provinces : Mitssooree or neigh' 

 bourhood, Herschel 1878 ; Tehri Garhtvdl 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 :— 

 Sikkini, Phulloot 11,500', Levinge 1880 (Gamble''8 No. 85S8). 

 " A large broad-spreading fern, with a long stipe, and when dried 

 reminding one of Nephrodium marginatum Wall., and me some- 

 times of ISf. ramosum, Hope. The scales at base of stipe are hke 

 those of A. nigripes Mett., but pale in colom*, as is the frond. 

 The sori do not lie in rows parallel to and near the costa, like 

 those of A. nigriieSy 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 8aharanpur catalogue as A. sele- 

 mpteris^ 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, aud aTso becfau^e they have largely added to the 



