584 MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 
the first specimen on the type sheet. L. scandens, Bedd. Ferns South. Ind. t. 61; 
Ettingh. Farn. Jetzw. t. 167. figs. 2, 4, 10, t. 169. fig. 3; Benth. Fl. Austral. vii, 
961; Hk. & Baker, Syn. Fil. 437, partly; not of Swartz, Syn. Fil. 152. Ugena 
microphylla, Cav. Le. t. 595. fig. 2. Ophioglossum filiforme, Roxb. in Cale. Journ. 
Nat. Hist. iv. 476, t. 26, upper figure.—Rheede, Hort. Mal. xii. t. 34. 
Bhotan ; Nuttall. Bengal Plain, rare ; Cooch Behar, Sylhet, Chittagong, C. B. Clarke. 
—Distrib. South India, Ceylon, Malay Peninsula and Islands. 
This fern is rare in Bengal, the only scrap in the Kew Herbarium being Nuttall's.— 
Ophioglossum scandens, Linn. Sp. Pl. 15, is founded, so far as the Indian material is con- 
cerned, on Rheede, Hort. Mal. xii. t. 33, which is exactly L. fleruosum, Bedd. Ferns 
South. Ind. t. 63. Swartz carefully distinguished his Z. scandens as having serrated 
leaflets; and notes Ugena microphylla as differing. Roxburgh, R. Brown, and Wallich 
all discovered that the present plant was not that of Linnzus and Swartz. L. micro- 
phyllum is, I think, the best marked and least variable species in the genus. 
3. L. FLEXUOSUM, Swartz, Syn. Fil. 153. Fertile frond 1-pinnate; pinne often 3-lobed 
or 3-partite, the terminal lobe or leaflet elongate, often 2—4 in. ; barren fronds (from 
the upper part of a well-developed stem) similar, margin of the pinne usually 
serrate, scarcely crenate or lobed except as to the two smaller basal lobes.—Bedd. 
Ferns South. Ind. t. 63. L. pinnatifidum, Swartz, Syn. Fil. 153 ; Etting. Farn. Jetzw. 
t. 170. fig. 10; Hk. & Baker, Syn. Fil. 438. Lygodium semihastatum, Desv.; Hk. 
& Baker, Syn. Fil. 437 (at least as to Cav. Ic.). .L. serrulatum, Blume, Enum. 
Pl. Jav. 254. Z. longifolium, Wall. Cat. 175. L. pubescens, Wall. Cat. 2200. 
DOT 
use oi oS 
Nr ee 
L. polystachyum, Wall. Cat. 177 partly, not type sheet. Ophioglossum fleauosum, —— 
Linn. Sp. Pl. 1519; Roxb. in Cale. Journ. Nat. Hist. iv. 477. O. scandens, Linn, ` 
Sp. Pl. 1518 (as to the Indian material); Roxb. in Cale. Journ. Nat. Hist. iv. 477, 
t. 26, lower figure. Ugena polymorpha, Cav. Yc.t. 595.fig. 1. U. semihastata, Cav. 2 
Ic. t. 594. fig. 1. Hydroglossum flezuosum, pinnatifidum, auriculatum, Willd. Sp. 
Pl. v. 83, 80, 84.—Rheede, Hort. Mal. tt. 32, 33. 
. Throughout Bengal Plain, abundant; extending into the hills up to 5000 feet alt., and : S 
west as far as Kumaon.—Distrib. South India, Ceylon, Malay Peninsula and Islands, —— 
Tropical Africa. 
. The barren fronds from near the base of a young stem are often undivided, 2-8-lobed ! E 
or palmate; the next upwards are pinnate, with 2 or 3 or 4 pinnze, or sometimes twice — 
dichotomous. Linneus founded his A. scandens on Rheede, Hort. Mal. xii. t. 92, and 
remarked of his O. flexuosum, founded on Rheede, Hort. Mal. t. 33, that it was “ nimis p 
affinis." The two are only states of one plant. The same explanation applies bs 
L. semihastatum, Desv. ; but the solitary specimen in the Kew bundle so named exhibits | E 
a fruiting frond only, with very large pinnæ, and may be something distinct. 
A. L. JAPONICUM, Swartz, Syn. Fil.154. Barren pinnze 2-pinnate, secondary pinnz often 
lobed, fertile pinnz less compound, terminal pinna long, narrow, serrate or cren: 
