552 MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 
Mett. Fil. Hort. Lips. 33, t. 23. fig. 10; Carr. in Fl. Viti. 367; Hook. Sp. Fil. v.32; 
Hk. & Baker, Syn. Fil. 344; Benth. Fl. Austral vii. 771. Goniophlebium sub- 
auriculatum, De Vriese; Bedd. Ferns Brit. Ind. t. 78. 
Khasia, alt. 3000—5000 feet, very common.—Distrib. Malaya, Queensland. 
The Khasi examples have the pinnz wider, more auriculate at the base, less serrate 
than the Malay. Theform Goniophlebium serratifolium, Brack., in Malaya, Queensland, 
and Polynesia, differs more than does P. argutum. Col. Beddome (Ferns Brit. Ind. Suppl. 
p. 21) attributes P. verrucosum, Wall, to North India. In the Kew bundle there are 
no examples north of Malacca and Penang; but except as to the sori forming papille on 
the upper surface of the frond, I see little difference between the two; and possibly 
Col. Beddome sorts the material differently. 
Subgenus VI. Niphobolus. Fronds simple, linear, entire (or partially irregularly lobed), 
the under surface (at least about the young sori) with stellate scales or hairs. Veins 
obscure, looping; areola containing 2 or more sori. 
27. P. ADNASCENS, Swartz, Syn. Fil. 25, 222, t. 2. fig. 2. Rhizome slender, tough, wide- 
creeping on trees; scales at the base of the scattered stipes lanceolate-linear, often 
hairy; fronds similar, or the barren smaller than the fertile, 2-10in.; sori in the 
upper part of the frond, when young bursting through the dense stellate tomentum, 
when ripe elevated; barren part of the frond with thin stellate tomentum or nearly 
glabrous.—Wall Cat. 268; Hook. Sp. Fil v. 47; Hk. & Baker, Syn. Fil. 349. 
P. pertusum, Roxb. in Calc. Journ. Nat. Hist. iv. 483; Wall. Cat. 267; Hook. Exot. 
Fil. t. 162; Mett. Farngatt. Polypod. 125. P. vittarioides, Wall. Cat 270; Mett. 
Farngatt. Polypod. 126. P. caudatum and varium, Mett Lc.  Niphobolus ad- 
nascens, Kaulf.; Carr. in Fl. Viti. 367; Hook. Garden Ferns, t.19; Bedd. Ferns 
South. Ind. t. 184. N. levis, Bedd. Ferns Brit. Ind. t. 161. AN varius, Kaulf.; 
Blume, Enum. Pl. Jav. Fil. 106, Fl. Jav. Fil t. 21. AN elongatus, Blume, Fl. 
Jav. Fil. t. 20. N: caudatus, Kaulf.; Blume, Fl. Jav. Fil. t. 22. 
. Throughout North Tndia in moist climates ; alt. 0-3000 feet, abundant ; extending over 
the plains to Caleutta and the sea-face of the Soonderbun. —Distrib. South India, Ceylon, 
Malaya, China. 
Very common throughout the plain of Bengal. The fronds are usually E E but 
sometimes the barren fronds are shorter and blunter than the fertile. The immersion of 
the soriis by no means a constant character. The large examples from Sikkim and 
Cachar have been placed by Mr. Baker with P. acrostichoides ; but P. acrostichoides has 
the scales at the base of the stipe obtuse. I observe that Mr. Thwaites discriminates 
the two species my way. The scales on the long creeping rhizome sometimes are much 
the same in the two species; but in these (and allied Polypodiums) there is a tuft of 
scales encircling the stipe at its point of dehiscence from the rhizome; these are 
strikingly different in P. adnascens and P. acrostichoides. 
28. P. JAINTENSE, C. B. Clarke. Rhizome very slender, tough, — on trees ; 
"scales = the base of the scattered stipes lanceolate-linear, often hairy ; stipes Jui» 9 
