472 
FILICES. 
[. Lindsaya . 
ring. Sori marginal, linear, uniting two or more of the veins. In- 
volucre with two lips, both opening towards the outside. — Generally 
small subcoriaceous bright green ferns, with free veining and ultimate 
segments truncate on the lower and inner side. Distrib. Tropics of 
both hemispheres. Species 50. 
Frond simply pinnate. 
Frond membranous, glabrous 1. L. ensifolia. 
Frond subcoriaceous, tomentose 2. L. acutifolia. 
Frond bipinnate. 
Pinnules obovate-cuneate 3. L. cuneata. 
Pinnules oblong-trapezoid . 4. L. Kirkii. 
1. L. ensifolia, Swartz ; Hook, and Baker, Syn. Fit. 112. Eootstock 
woody, short-creeping above ground, as thick as a quill, clothed with 
minute lanceolate bright brown scales. Stipe ft. long, glossy, 
naked, chestnut-brown. Frond membranous, bright green, naked, 
rhomboid, simply pinnate, |-1 ft. long. Pinnae 2-12 pairs, distant, 
ligulate, erecto-patent, 2-6 in. long, in. broad, cuneate at the base, 
the barren ones faintly crenate. Veins fine, distinct, lax, ascending 
from a distinct central midrib, joining mainly in costal arches. 
Sori continuous along both sides of the pinnae. Involucre pale, 
narrow, membranous. 
Mauritius and Seychelles, frequent in the forests. Spread through the tropics 
of the Old World. Also Cape. 
2. L. acutifolia, JDesv. ; Hook . Sp. Fit. i. 209. Eootstock woody, 
short-creeping, clothed with minute bright brown linear- subulate scales. 
Stipe naked, stout, greenish, | ft. long. Frond simply pinnate, 
subcoriaceous, lanceolate, narrowed gradually to the base, 2-3 ft. long, 
4-6 in. broad, densely clothed with brown tomentum, soon glabrescent 
on the upper surface. Pinnae very numerous, crowded, sessile, the 
fertile ones lanceolate, 2-3 in. long, in. broad, often rather falcate, 
the barren ones shorter, broader and more obtuse, margined with a 
row of white dots, articulated at the base and easily falling. Veins 
fine, immersed, erecto-patent from a distinct central midrib. Sori 
forming a narrow line along both edges of the pinnae. Involucre firm, 
brown, glabrous. L. lanuginosa, Wall . ; Hook, and Baker , Syn. Fil. 
109. 
Mauritius, near Bon Amour, Gardner! Rodriguez, Bouton! New Guinea to 
Zambesi-land. Resembles Nephrolepis acuta in general habit and texture. 
3. L. cuneata, Willd. ; Bojer, Hort. Maur. 403. Stipe slender, 
angular, naked, dark chestnut-brown, 4-5 in. long. Frond mem- 
branous, bright green, naked, rhomboid, bipinnatifid, 5-6 in. long and 
broad. Pinnae erecto-patent, 5-6 on a side, linear, 3-4 in. long, ending 
in a long point at the tip, the rest cut down to a narrow wing into 
obtuse obovate-cuneate segments^- in. broad. Veins fine, free, erecto- 
