74 JOURNAL , BOMBA Y NATURAL HISTORY SOCIETY , FoZ. X///. 
3. D. Clarkei, Baker, in-Hook. Ic. t.4625 ; Syn. Pil. 91. D. darece- 
formis } Levinge MS. ; C. R. 443. Leucostegia HooJceri , Moore, under 
Aerophorus , Bedd. H, B. S2. 
Punjab : Chamba 10,800/ ‘J. Marfceu 1898, Simla 1?^.— Hattu and Baghi Koad, 
Bliss, 22nd Sept. 1890 ; u Sirmur 9-11,000', T. T. 1 *, in Herb. Hort. Kew. (Another 
ticket for same specimen bears —' u Hattu 8/49.") 
N.-W. P. D. D„ List. — Jaunsar, Chaehpur, Peak, lu,500/ Gamble 1898. 
Distrib .— Asia : N. Jnd. (Him.), Simla Reg. 9000', very rare; Sikkim, 
3 hot an, 5-12,000', Hook. fil. et Thom. , Clarke , Levinge , Gamble , rare. 
I detected this among Mr. Bliss’s ferns sent to me for inspection by Mr. 
Trotter, and pronounced it to be D, Clarkei y Baker, from reading Beddome’s 
description of Leucos . Hookeri , Moore, but I had not my Sikkim specimens 
(from Levinge) at hand to compare it with. I sent Mr. Bliss’s plant home to 
Mr. Levinge, who, in returning it, wrote-— “ The Davallia you sent me is cer- 
tainly D. Clarkei , identical in all respects, rhizome, scales, indusium, &c., with 
my Sikkim specimens. It is quite different from D. (or Polypodium) dance - 
formis . D. Clarkei is very rare in Sikkim, only once or twice found I believe.” 
Clarke in the 6 Review ’ says that D. dareceformis is frequent, both in the 
Himalaya and Khasi hills ; but in a subsequent paper (Journ. Linn. Soc. Bdt. 
Yol. XIX, 291) he says that Levinge united ferns of two different genera in 
one species. Poly podium dameforme, Hook., is I believe quite common, in the 
Khasi Region, and I have never seen an involucre on it. I gather that 
Levinge inclined to agree with Beddome that P. dareceforme might be a Leu- 
costegia nearly allied to D, Clarkei . The indusium of D. Clarkei is very broad, 
and quite persistent. In Gamble’s plants, some collected by himself in 
Sikkim, and afterwards kept in cultivation at Darjiling, I see large, broad 
beautifully orange-red scales scattered over stipe and rhachiscs. The 
locality, variously called 46 Sirmur, 9-11,000' ” and Hattu,” where Thomson 
got the specimen in the Kew Herbarium, is doubtful ; but, as the hills of the 
Sirmur Territory, south of Simla, are not so high as 9-11,000', I think Hattu 
Mt., eastward of Simla, the summit of which is 10,500', must be the real 
habitat, and Mr Bliss’s discovery of the plant at a lower level on that mountain 
41 years later, confirms this view'. Anyhow, eleven degrees of longitude 
separate the Punjab and the Sikkim habitats. Large specimens of D . Clarkei 
from N.-E. India are very like Asplmitm ternifolhim, Don, in shape and 
cutting. After the above was sent to press Mr. Duthie sent me large and 
beautiful specimens collected in uhamba by Mr, J. Marten, in a quite young 
state • and about the same time Mr. Gamble gathered rhizomes of the plant in 
Jaunsar from which the young fronds of 1898 had not yet sprung up. 
