294 MR. J. G. BAKER ON A COLLECTION OF FERNS 
LOMARIA VULCANICA, Blume? 
48*. ASPLENIUM (Š EUASPLENIUM) LUDENS, n. sp. 
Stipite elongato minute paleaceo, frondibus oblongo-lanceolatis sim- 
pliciter pinnatis papyraceis glabris, pinnis lanceolatis acuminatis serratis 
brevissime petiolatis basi subæqualiter rotundatis vel deltoideis, venis 
crebris patulis subsimplicibus, soris linearibus medianis parallelis. 
Caudex decumbent. Paleæ minute, brown, lanceolate, mem- 
branous. Stipe half a foot or more long, green, minutely 
paleaceous, as is also the axis of the lamina. Frond in the fully 
developed form oblong, simply pinnate, a foot or more long, 6-8 
inches broad, membranous in texture, bright green and glabrous 
on both surfaces. Pinnæ contiguous, nearly sessile, lanceolate 
acuminate, finely serrated, the largest 4-5 in. long, 3-3 in. broad, 
nearly equal (broadly deltoid or rather rounded) at the base, the 
lower ones not at all dwarfed. Veins fine, close, distinct, simple 
or forked, spreading from the costa at an angle of about 80°. 
Sori parallel, running along the veins from the costa more than 
halfway to the midrib, not more than in. long. Involucre narrow, 
glabrous. 
A near ally of A. multilineatum, Hook., and, like that, the 
young fronds run into bipinnate dareoid forms, with small linear 
secondary segments. In A. multilineatum the veins are closer, 
and the sori run along them regularly from end to end. 
ASPLENIUM UMBROSUM, var. CRISTOVALENSE, n. var. 
Closely allied to A. assimile of Norfolk Island; but the ter- 
tiary segments broader in proportion to their length, ingeguilate- 
rally ovate-deltoid ; the largest 4-1 in. long., 4 in. broad, obtuse 
deeply pinnatifid. The sori begin at the costa and run about 
halfway up the vein, and are occasionally diplazioid. The Indian 
botanists who work at ferns seem all to think that assimile ought 
to be separated as a good species from wmbrosum. Probably the 
best plan would be to keep that name for a species of which 
the Indian, Norfolk-Island, and San Cristoval plants should be 
regarded as three distinct geographical races: 1, Norfolk-Island 
type; 2, indicum, figured Beddome, Fil. Brit. Ind. t. 294; and 
3, sancristovalense. 
ASPLENIUM (Š DAREA) OBTUSILOBUM, Hook. 
ASPLENIUM (8 DIPLAZIUM) BRACKENRIDGEI, Baker. 
AsPIDIUM (Š CYCLOPELTIS) SEMICORDATUM, Yar, BIAURICULA- 
TUM, n. var. 
