MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA; 485 
23. A, VARIANS, Hk. & Grev. Ic. Fil. t. 172. Frond elongate-lanceolate, the lower pinne 
not much reduced; pinnz 8-12 on each side, deeply pinnatifid or 2-pinnate into 
cuneate segments, acutely toothed on the outer edge.—Hook. Sp. Fil. iii. 192; 
Bedd. Ferns South. Ind. t. 129; Milde, Fil. Europ. 73; Hk. & Baker, Syn. Fil. - 
216. A. Ruta?, Wall. Cat. 233. A. parvulum, Wall. Cat. 2207. A. fimbriatum 
and var. leptophyllum, Kunze in Linnea, xviii. 117, xxiv. 265; Mett. Farngatt. 
Aspl. 141. | | 
Himalaya, alt. 6000—10,000 feet; frequent, becoming rare eastwards. Sikkim, La- 
choong, alt. 9000 feet, Sir J. D. Hooker. Bhotan, alt. 6500 feet, Griffith.—Distrib. Mts. 
of South India and Ceylon, North China, Japan, South Africa. 
Pinnz usually less numerous than those of A. fontanum, more irregularly cut and 
more acutely toothed; but the two species are very nearly allied. None of the Hima- 
layan examples are difficult to separate from A. lanceolatum; but Beddome (in Ferns 
Brit. Ind. Suppl. p. 11) hints that the South-Indian examples are so difficult to separate 
. from A. lanceolatum that the two species are probably one. The Kew A. lanceolatum is 
much firmer in texture, and runs nearer A. Adiantum-nigrum, Linn. 
24. A. BULBIFERUM, Forst. Fl. Ins. Austral. Prodr. 80. Frond 1-4 feet, oblong- 
lanceolate or ovate-lanceolate, 2- or 3-pinnate; stipe scaly near the base, often more 
or less hairy throughout; rhachis of the primary pinnz subalate narrowly; sori 
large.—Schk. Krypt. Gew. t. 79; Hook. Ic. Pl. t. 423; Mett. Farngatt. Aspl. 106; 
Hook. Sp. Fil. iii. 196; Hk. & Baker, Syn. Fil. 218; Benth. Fl. Austral. vii. 748. 
A. bullatum, Wall. Cat. 215; Mett. Farngatt. Aspl. 106; Bedd. Ferns Brit. Ind. 
t. 65. Athyrium macrocarpum, Fée, Gen. Fil. 188, not of Hk. & Baker. Cenopteris 
appendiculata, Labill. Fl. Nov. Holl. ii. 94, t. 243. 
Nepaul, Sikkim, Bhotan, Khasia; alt. 2000-6000 feet; generally scattered, nowhere 
abundant.— Distrib. Penang, Australia, New Zealand, Bourbon, Natal, Mexico. 
All the North-Indian specimens are alike. Frond a deep green, ultimate segments 
large, flaccid, the large sori often visible from the upper surface. Exactly the same 
type comes from New Zealand, where the fern is common and very variable. The sori 
are not marginal in the North-Indian form. If all the Kew examples from Natal, 
Mexico, Australia, Ze. be called 4. bulbiferum, the writing-out of the specific descrip- 
tion becomes very difficult. 
25. A. TENUIFOLIUM, Don, Prodr. Fl. Nep.8. Frond 4-20 in., lanceolate, 3- or 4-pinnate ; 
rhachis glabrous or nearly so; ultimate pinne } in. or less.—Mett. Farngatt. Aspl. 
128 ; Hook. Sp. Fil. 193, 2nd Cent. Ferns, t. 29; Bedd. Ferns South. Ind. t. 130; 
Hk, & Baker, Syn. Fil. 220. A. concinnum, Wall. Cat. 216. 
From Nepaul to Bhotan, alt. 5000-9000 feet, common. Khasia, alt. 4000-5500 feet, 
frequent.—Distrib. Moulmein, Mts. of South India and Ceylon. ; ; 
. Tufted. Stipe usually glabrous or with few scattered hairs. Frond green, thin. Sori 
ultimately nearly covering the small segments.—This is easily known from A, bulbiferum 
