MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 473 
_ Fée, Gen. Fil. 70. Plagiogyria pycnophylia, Mett. Farn. Plagiog. 8; Bedd. Ferns 
Brit. Ind. t. 52. <Acrostichum triquetrum, Wall. Cat. 23, partly. Stenochlena 
P pycnophylla, Presl, Epimel. Bot. 165. 
Nepaul to Bhotan, alt. 6000—11,000 feet; one of the commonest ferns at 7000-8000 
feet. Khasia; alt. 4000-6000 feet, common.—Distrib. Malay Peninsula and Java. 
I have collected a frond of this having the lower halves of the pinne barren, their 
upper halves fertile. It is a high-level fern in Sikkim, covering with its strong tufts 
large areas in the upper dripping forests. I have collected it at 11,000 feet near Jongri 
under Kinchinjunga. 
4. L. EUPHLEBIA, Kunze, in Bot. Zeit. 1848, 521. More than half the pinnee of the 
barren frond stalked cuneate at base, scarcely serrulate in their lower half.— Kunze, 
2nd Suppl. to Schkuhr, t. 125 ; Hook. Sp. Fil. iii. 20; Hk. & Baker, Syn. Fil. 183, 
exclud. synon. ; Hook. 2nd Cent. Ferns, t. 89; Benth. Fl. Austral. vii. 738, excl. the 
Chinese and Japanese var. L. articulata, F. Muell. Fragm. v. 187. Plagiogyria 
triquetra, Mett.-Farn. Plagiog. 10. P. euphlebia, Mett. l. c.; Bedd. Ferns Brit. Ind. 
t. 165. Acrostichum triquetrum, Wall. Cat. 23, type sheet. Olfersia triquetra, 
Presl, Tent. Pter. 235. Stenochlena triquetra, J. Sm. in Hook. Journ. Bot. 
1842, 149. 
Nepaul, Wallich. Khasia; alt. 4000-6000 feet, plentiful.—Distrib. Japan, North 
Australia. 
There are only 6 sheets of this in all, except from Khasia, whence there is abundance. 
The numerous examples sent from Japan by Maximowicz are all L. adnata, except 
two, that are L. semicordata. As stated under L. adnata above, L. euphlebia as to the 
Indian species is well separated. Usually only a very few of the uppermost pinnæ 
of the barren frond are adnate; the lowest pinns are distinctly stalked, often shorter 
than some above, and distant. 
23. BLECHNUM, Linn. 
l. B. CARTILAGINEUM, Swartz, Syn. Fil. 114 & 312. Frond pinnatifid, but pinnate 
towards the base, margin serrulate ; the lowest pinne linear, distant, narrower than 
those above, but not reduced to mere auricles.—Mett. Fil. Hort. Lips. 63, t. 5. 
figs. 1-5; Hook. Sp. Fil. iii.43; Hk. & Baker, Syn. Fil. 184; Benth. Fl. Austral. 
vii. 738; Luerssen, Fil. Graeff. 132. 
Mishmee, Griffith._—Distrib.. Luzon, Australia. 
I remove (without any hesitation) Griffith’s solitary example from B. nitidum (where 
Hk. & Baker have left it) to B. cartilagineum. Hooker’s B. nitidum is founded on and 
figured. from Tweedie’s solitary Brazilian example; this is copied by Bedd. Ferns Brit. 
Ind. t. 49. The species hereabouts are critieal, but Griffith's specimen agrees exactly 
with the Australian plant, and not with the American ; it has the rhachis beneath pube- 
rulo-subpubescent, a character often seen in the Australian examples, never in the Ame- 
rican B. nitidum or B brasiliense. It is to be noted that Presl’s B. om Kade | 
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