486 
FILICES. 
[. Asplenium . 
middle, simply pinnate, glabrous, moderately firm in texture. Pinnae 
very numerous, linear, sessile, entire or faintly toothed, subequaliy 
cuneate at tbe base, the central ones 1-2 in. long, £ in. broad. Kaeius 
slightly scaly. Veins erecto-patent, moderately close. Suri numerous, 
parallel, nearly reaching both edge and midrib. Involucre pale, 
glabrous. 
Mauritius, rare. Diego Garcia, Bouton ! Tropical Asia, not African. 
4. A. lunulatum, Sw.; Hook, and Baker , Syn. Ml. 202. Rootstock 
erect ; scales minute, linear, brown. Stipes 3-6 in. long, slender, 
naked, green or brownish. Frond lanceolate, green, membranous, 
simply pinnate, £-1 ft. long, 1-2 in. broad ; rachis slender, naked. 
Pinnae numerous, sessile, oblique lanceolate, distinctly toothed all 
down the margin, parallel with the rachis on the upper side at 
the base, cuneate on the lower ; central ones f— 1 in. long, i-f- in. 
broad; lower ones little smaller. Veins fine, distant, erecto-patent, 
forked. Sori oblong, medial, iV”6 * n - l° n £- Involucre glabrous, mem- 
branous. A., stoloniferum, Bory ; Kuhn , Ml. Afric. 117. A. pulchrum, 
Thouars ; Kuhn , Ml. Afric. 113. 
Var. A. Macrjei, Hook, and Grev. Pinnae smaller, obtuse, more 
deeply toothed, with a free deltoid lobe on the upper side at the base. 
Mauritius, in damp woods of Grandnort and Grand Bassin. Seychelles, in 
the woods of Mahe, Horne , 404 ! Cosmopolitan in tropical and subtropical 
regions. We have a single Mauritian specimen from Bojer of the var. Macrcei. 
5. A. tenerum, For at. ; Hook, and Baker , Syn. Ml. 201. Rootstock 
suberect ; scales small, lanceolate, brown-black. Stipes contiguous, 
green, naked, foot long. Frond lanceolate, green, glabrous, mem- 
branous, simply pinnate, under a foot long, 2-3 in. broad. Rachis 
naked. Pinnae numerous, nearly sessile, oblique lanceolate, crenate 
throughout the sides, the central ones 1| in. long, f— | in. broad, 
parallel with the rachis on the upper side at the base, and often a 
little auricled, cuneate on the lower side. Veins distinct, erecto-patent, 
simple, except the lowest on the upper side. Sori copious, parallel, 
nearly reaching both edge and midrib. Involucre glabrous, persistent. 
Seychelles, in the woods of Mahe, not common, Horne , 684 ! Spread through 
the tropics of the Old W orld, but rare in Africa ; gathered only by Livingstone. 
6. A. lineatum, Sw. ; Hook, and Baker , Syn. Fil. 202. Root- 
stock woody, short-creeping ; scales linear, dark brown. Stipes con- 
tiguous, | foot long, greenish, slightly scaly. Frond oblong-lanceolate, 
bright green, glabrous, membranous, simply pinnate, 1-2 feet long, 
4-6 in, broad ; rachis furfuraceous. Pinnae very numerous, subsessile, 
oblique, linear, acuminate, the central ones 3-4 in. long, fin. broad, 
dentate, parallel with the rachis on the upper side at the base, cuneate 
on the lower. Veins moderately close, fine, forked, erecto-patent. 
Sori copious, parallel, nearly reaching both midrib and margin. 
Involucre glabrous, persistent. A. nodulosum, Kaulf. ; Bojer, Hort. 
Maur. 395. 
