458 MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 
Deccan exhibit more or less powder, and I should call them Ch. farinosa type. Sorting 
the specimens my own way, I fancy that I can keep Ch. Dalhousie distinct; but I bow 
to the opinion of Baker and F. Henderson, and rank it as a variety. 
Var. chrysophylla, Hook. Fil. Exot. t. 95. fig. 1. Frond triangular-lanceolate, with 
sometimes 6-8 pairs of free pinnze; powder beneath golden, never white, sometimes 
scanty.— Ch. chrysophylla (sp.), Hook. Sp. Fil. ii. 113; Hook. Ic. Pl. t. 901; Mett. 
Farngatt. Cheil. 47. 
Khasia; alt. 5500 feet, not rare. Sikkim, W. S. Atkinson.— This is a most doubtful 
plant, that has been confused with Ch. argentea, var. sulphurea, to which it bears 
little resemblance except in having yellow powder beneath. Both W. 8. Atkinson and 
Major F. Henderson think it should be appended to Ch. farinosa rather than to Ch, 
argentea. 
9. CH. ARGENTEA, Kunze in Linnea, 1850, 242. Frond triangular; lowest pair of pinne 
most developed, approximate; remainder of the frond pinnatifid or with one other 
free pair of pinne; stipe glabrous, often longer than the frond, with sublinear 
scales near the base; pinne glabrous beneath, but with white powder; involucre 
crenate, rarely much toothed.—Hook. Sp. Fil. ii. 76; Mett. Farngatt. Cheil. 45; 
Bedd. Ferns Brit. Ind. t. 143; Milde, Fil. Europ. 37; Hk. & Baker, Syn. Fil. 142. 
Pieris argentea, Gmel.; Langsd. & Fisch. Pl. Voy. Russes, t. 22. 
Khasia; alt. 3000-5500 feet, frequent.—Distrib. Mergui, Northern Asia to Siberia, 
Japan, and Kamtschatka. : 
In my typical example the stipe is 84 in., the frond 31; free pinne one pair only, 
very white beneath. 
Var. sulphurea, Hook. Fil. Exot. t. 95. fig. 3. Exactly as in the type, but the powder 
often yellow or golden. 
Khasia and Mergui; growing sometimes on the same rhizome with white-powdered 
fronds. 
17. Onycuium, Kaulf. 
1. O. AvRATUM, Kaulf. Enum. Fil. 144. Coriaceous, shining on both surfaces; barren ` 
frond sub-4-pinnate, fertile frond 3-pinnate; some of the involucres often exceeding ` ` 
i in.; ripe capsules golden.—Hook. Sp. Fil. ii. 121; Fée, Gen. Fil. 131, t. 7. fig. C; 
Bedd. Ferns South. Ind. t. 30; Hk. & Baker, Syn. Fil. 143. Lomaria aurea, Wall. — 
Cat. 38. ZL. caruifolia, Wall. Cat. 39. L. decomposita, Don, Prodr. Fl. Nepal. 14. 
Pteris chrysocarpa, Hk. & Grev. Ic. Fil. t. 107. 
From Nepaul to Assam and Chittagong, alt. 0-4000 feet, common: sometimes found ` 
far from the hills in East Bengal.—Distrib. Malay Peninsula and Islands, New Guinea. ` 
In large tufts. Scales numerous at the base of the stipe, linear, chestnut-coloured. ` 
Involucres on the terminal segments much longer than the others.—The form L. carui- 
Jolia, with shorter sori, less golden capsules (from Amherst) is marked by Kurz as 9. ` 
var. of O. japonicum, to which view Capt. F. Henderson inclines. Mr. Baker agrees with — 
me that it is better placed with O. auratum. t aa 
