MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 433 
of the imperfect segment be taken for a veinlet, and its veinlets for branches, then a 
. pinnate veinlet may be made out. 
4. A. ANDERSONI, J. Scott, in Trans. Linn. Soc. xxx. 38, t. 17. Surface of the frond 
beneath with needle-like hairs; veinlets (in the segments of a pinnule from the 
middle of a barren pinna) 2-branched, none 3-branched ; carpophore hairy, without 
any involucre at its base after the capsules have fallen.—Bedd. Ferns Brit. Ind. 
t. 310; Hk. & Baker, Syn. Fil. 459. 
Sikkim; alt. 1000-2500 feet, J. Scott &c. Khasia, Dr. Jerdon. 
Attains 20-30 feet (J. Scott). Segments serrate ; sori small, the two rows wider apart 
at the base of the segment than at the apex. 
5. A. OLDHAMI, Bedd. Ferns Brit. India, t. 343. Pinnules glabrous beneath, often with 
ovate adpressed scales on the rhachis; veinlets not branched, or a few 2-branched ; 
sori in two parallel rows, exinvolucrate.—A. Scottiana, Baker, in Gard. Chron. 1872, - 
699, with fig.; Hk. & Baker, Syn. Fl. 460. Æ. comosa, J. Scott, in Trans. Linn. 
Soc. xxx. 36, t. 16 B, not of Wall. 
Sikkim ; alt. 5000-6000 feet above the Cinchona-plantation, and above Khursiong. 
Khasia, Dr. Oldham, Sir J. D. Hooker; alt. 4000 feet, C. B. Clarke.—Distrib. 
Moulmein. 
Grows in groves. Unarmed, trunks 6-10 feet. Ultimate segments oblong or narrow- 
oblong, strongly crenulate-serrate nearly to their base. 
6. A. GLABRA, Hook. Sp. Fil. i. 51.  Pinnules glabrous beneath, often with lanceolate or 
linear lax scales on the rhachis; veinlets not branched, or a few 2-branched; sori 
exinvolucrate, in two rows approximating towards the apex of the segment.—Bedd. 
Ferns South. Ind. t. 60; Hk. & Baker, Syn. Fil. 43; Mett. in Ann. Mus. Lugd. 
Bat. i. 52; J. Scott, in Trans. Linn. Soc. xxx. 38, t. 18; Kurz, For. Fl. Brit. Burma, 
ii. 573. A. gigantea, Hook. Sp. Fil i. 53. A. Helferiana, Presl, Gefüssb. 33. 
A. Metteniana, Hance, in Seem. Journ. Bot. 1868, 175. Cyathea venulosa, Wall. 
Cat. 180. Gymnosphera glabra, Blume, Enum. Pl. Jav. Fil. 242. Polypodium 
giganteum, Wall. Cat. 321. P.? wmbrosum, Wall. Cat. 336. P. altissimum, 
Wall. MS. 
From Nepaul to Assam and Chittagong; alt. 0-1000 feet, abundant, ascending to 4000 
feet alt.—Distrib. Mts. of Malabaria and Ceylon, Burma, the Malay Peninsula and 
Islands, South China. o i: 
Usually 10-20 feet, attaining 50 feet. The rhachis of the pinnule is usually glabrous 
beneath, sometimes with scattered very narrow scales or flocculose hairs of lax tissue, 
never (in the North-Indian examples) with needle-like hairs as shown in the enlarged 
fragment of a pinnule in Beddome’s picture. The Assam example at Kew with needle- 
like hairs I take to be Polypodium auriculatum, Wall. Receptacle, after the capsules have 
fallen, glabrous, or more often minutely pubescent; not unfrequently with many lax 
~ hairs (paraphyses) in North-Indian exampl 2d 303. 
