488 
FILICES. 
| Asplenium 
10. A. falcatum, Lam.; Hook, and Baker , Syn. Fil. 208. Root- 
stock woody, suberect; scales small, linear, dark brown. Stipes 
contiguous, naked, dark-green, \ ft. long. Frond oblong-lanceolate, 
glabrous, subcoriaceous, simply pinnate, \-l foot long, 4-6 in. broad ; 
rachis nearly naked. Pinnae numerous, nearly sessile, oblique lanceo- 
late, acuminate, 2-3 in. long, f-1 in. broad, sharply toothed all down 
the edges, parallel with the rachis and often auricled on the upper side 
at the base, cuneate on the lower. Veins fine, close, erecto-patent, 
very oblique. Sori reaching from the midrib nearly to the edge. 
Involucre narrow, glabrous, persistent. A. macrophyllum, Bojer , Hort. 
Maur . 394, not Sw. 
Mauritius and Rodriguez, frequent in the forests. Spread through the warmer 
regions of the Old World. Passes into A. macrophyllum , Sw., by gradual 
intermediate stages. 
11. A, protensum, Schrad. ; Hook, and Baker , Syn. Fit. 211. Root- 
stock suberect or short-creeping; scales minute, brown, lanceolate. Stipes 
contiguous, brownish, slightly scaly, 2-4 in. long. Frond lanceolate, 
bipinnatifid, membranous, bright green, glabrous, 1-2 feet long, 3-4 iu. 
broad ; rachis furfuraceous. Pinnae very numerous, oblique lanceolate, 
sessile, lf-2 in. long, f in. broad, parallel with the rachis on the upper 
side at the base, cuneate on the lower, cut about halfway down to the 
rachis into sharply-toothed erecto-patent lobes. Veins fine, close, 
erecto-patent. Sori reaching from the midrib about halfway to the 
edge. Involucre narrow, glabrous, evanescent. 
Mauritius, in the woods of the Pouce and Pieterhoth. Also Bourbon, Cape, and 
Tropical Africa. 
12. A. caudatum, Forst. ; Hook, and Baker , Syn. Fit. 209. Root- 
stock suberect ; scales linear, dark brown. Stipes contiguous, naked, 
greenish, 6-9 in. long. Frond oblong- lanceolate, glabrous, subcoria- 
ceous, bipinnatifid, 1-2 feet long, 6-10 in. broad ; rachis naked. Pinnae 
very numerous, nearly sessile, oblique lanceolate, acuminate, 3-5 in. 
long, f-1 in. broad, deeply cut into erecto-patent sharply-toothed lobes 
all down the margins, parallel with the rachis and often auricled on the 
upper side at the base, cuneate on the lower. Veins close, fine, dis- 
tinct, forked, very oblique. Sori linear, irregular, reaching about 
halfway from the midrib to the edge. Involucre firm, glabrous, 
persistent. 
Seychelles, frequent in the forest, Home, 174 ! 668 ! Warmer zones, principally 
of Africa and Polynesia. 
13. A. bipartitum, Bory; Hook, and Baker , Syn. Fit. 212. Root- 
stock erect ; scales minute, lanceolate. Stipes tufted, slender, greenish, 
naked, f-f ft. long. Frond lanceolate, bipinnate, subcoriaceous, 
glabrous, 6-8 in. long, 2-3 in. broad ; rachis naked. Pinnae distinctly 
stalked, oblique lanceolate, 1-lf in. long, f in. broad, parallel with the 
rachis on the upper side at the base, cuneate on the lower, shallowly 
