MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 587 
rhizome, often 12 in. long; barren segment linear, the fertile segment rising from 
its centre.—Blume, Enum. Pl. Jav. Fil. 260; Hk. & Grev. Ic. Fil. t. 19; Carr. in 
Fl. Viti. 378; Bedd. Ferns Brit. Ind. t. 269; Hook. Garden Ferns, t. 33; Hk. & 
Baker, Syn. Fil. 446 ; Luerssen, in Journ. Mus. Godeffroy, 116; Benth. Fl. Austral: 
vii. 689. 
Upper Assam; .Bruce.—Distrib. Ceylon, Malacca to Polynesia and Australia, 
Mauritius. ` 
The single North-Indian example is marked * Sent to me from Upper Assam by 
Mr. D. Bruce, 1839," in handwriting supposed to be Helfer's. It will therefore be very 
desirable to strengthen the evidence for O. pendulum as à North-Indian species. 
49. HELMINTHOSTACHYS, Kaulf. 
1. H. ZEYLANICA, Hk. & Bauer, Gen. Fil. t. 48 B; Hook. 2nd Cent. Ferns, t. 94, Garden 
Ferns, t. 98; Bedd. Ferns South. Ind. t. 69; Hk. & Baker, Syn. Fil. 447; Benth. 
Fl. Austral. 690. H. dulcis, Kaulf. Enum. Fil. 28; Blume, Enum. Pl. Jav. Fil. 
258; Wall. Cat.54. Osmunda zeylanica, Linn. Sp. Pl. 1519; Roxb. in Cale. Journ. 
Nat. Hist. iv. 478. Ophioglossum laciniatum, Rumph. Herb. Amb. vi. t. 68. fig. 3. 
Botrychium zeylanicum, Swartz, Syn. Fil. 172. Botryopteris mexicana, Presl, Rel. 
Haenck. 76, t. 12. fig. 1. 
Bengal Plain, from the Soonderbun to Assam and Cachar ; common.—Distrib. Ceylon, 
Malacca, Malaya, Philippines, Queensland. 
_ All the North-Indian examples at Kew are from the plain at (or hardly above) sea- 
level; andI have never met the plant in the hills even 250 feet above thesea. I believe 
the locality Himalayas, given in Hk. & Baker, Syn. Fil., is erroneous. 
50. Botrycuium, Swartz. 
l. B. Lunarta, Swartz, Syn. Fil. 171. Barren segment sessile or nearly so, 1-pinnate ; 
pinne obovate, coriaceous.—Schk. Krypt. Gew. t. 154; Hook. Brit. Ferns, t. 48 ; Bedd. 
Ferns Brit. Ind. t. 208; Milde, Monog. Botrych. 47-62, t. 9. fig. 1, Fil. Europ. 192; 
Hk. & Baker, Syn. Fil. 447; Benth. Fl. Austral. vii. 690. Osmunda Zamaria, Linn. 
Sp. Pl. 1519; Engl. Bot. t. 318. 
_ Sikkim; Lachen, alt. 11,000-13,000 feet, Sir J. D. Hooker. Kumaon; Tolu, alt. 
12,000 feet, Strachey & Winterbottom. North-west India; Jameson. West Tibet ; 
Falconer. Karakorum - alt. 12,500 feet, C. B. Clarke.—Distrib. Arctic and Cold Tem- 
perate zone, extending to South Europe. Patagonia; Australia. 
2. B. navorronrvw, Wall.; Hk. & Grev. Ic. Fil t. 161. Barren segment petioled, 
8-pinnatifid, margin finely toothed.—Hook. in Bot. Mag. t. 5340; Milde, Monog. 
Botrych. 117-122, Fil. Europ. 206; Hk. & Baker, Syn. Fil. 448. P. subcarnosum, 
Wall. Cat. 49 ; Bedd. Ferns South. Ind. t. 69. B. sub-bifoliatum, Brack. U. S. Explor. 
Ferns, t. 44. | 
