482 filices . \Pteris. 
the pinnae. Involucre narrow, membranous, glabrous. P. geminata, 
Wall, ; Kuhn, Fil. Afric. 80. 
Mauritius and Seychelles, frequent in the woods. Round the world in the 
warmer zones. Only differs from P. quadriaurita in the broader wing of the pinnae 
and arching of the veins nearest their midrib. 
9. P. pedata, Linn. ; Hook. and Baker , Syn. Fil. 167. Stipes 
densely tufted, black, glossy, naked, 3-6 in. long. Frond deltoid, 
membranous, naked, 2-3 in. long and broad ; fertile oue deeply bipinna- 
tifid, only the lowest pair of pinnae compound, very unequal-sided, deltoid, 
deeply pinnatifid with a few close large lanceolate segments ; barren 
frond less deeply cut with fewer broader obtuse segments. Veins fine, 
immersed, uniting in abundant oblique areoles. Involucre narrow, 
glabrous, evanescent. P. pedatoides, Desv. ; Kuhn, Fil. Afric. 87. 
Mauritius, on Corps de Garde mountain, Lady Barkly ! Signal Mountain, Cat- 
tell. Also Bourbon, Madagascar, and Tropical America. 
10. P. atrovirens, Willd. ; Hook, and Baker , Syn. Fil. 170. Root- 
stock suberect. Stipes tufted, naked, a foot or more long, generally 
brown at the base, straw-coloured upwards, armed with a few obscure 
distant prickles. Frond deltoid, 1-2 feet long and broad, bright green 
and glabrous on both sides, moderately firm in texture, regularly deeply 
bipinnatifid, except that the lowest pair of pinnae are forked at the 
base. Central pinnae lanceolate, 6-12 in. long, 2-3 in. broad, cut down 
to a broad wing into ascending lanceolate segments ^ in. broad, 
those of the barren frond toothed. Veins uniting to form one or two 
rows of areoles between the midrib and edge of the final segments. 
Involucre narrow, glabrous. 
Seychelles, in the Cascade woods, Mahe, Borne, 652 ! Spread through Tropical 
Africa. General habit exactly of P. quadriaurita and P. biaurita. 
11. P. woodwardioid.es, Bory ; Hook, and Baker” Syn. Fil. 170. 
Rootstock suberect. Stipes tufted, naked, unarmed, straw-coloured, 
a foot or more long. Frond deltoid, 1-2 feet long and broad, bright 
green and glabrous on both sides, very thin and membranous in tex- 
ture, regularly deeply bipinnatifid, except that the lowest pair of 
pinnae are forked at the base. Central pinnae lanceolate, J-l foot long, 
l|-2 in. broad, cut down to a narrow wing into ligulate obtuse seg- 
ments in. broad. Veins distinct, uniting to form one or two rows 
of areoles between the midrib and edge of the final segments. P. 
pellucida, Kaulf. ; Bojer, Hort. Maur. 400. 
Mauritius, common in the mountain woods. Also Bourbon. Very near the 
last. 
12. P. marginata, Bory ; Hook, and Baker, Syn. Fil. 172. Rootstock 
erect. Stipes naked, straw-coloured, unarmed, a foot or more long. 
