350 MR. J. G. BAKER ON THE FLORA OF MADAGASCAR. 
Lower pinnules 23-8 in. long, 3-2 in. broad, narrowed to an 
obtuse tip, rounded to a truncate base more cut away on the 
lower than the upper side, all except the uppermost distinetly 
petioled. Veins close and very distinct. Sori arranged in a single 
row close to the midrib on each side of it. Indusium opening 
widely and breaking up but little.—East Androna, Baron 5604! 
Habit exactly of the Brazilian Alsophila Tenitis. 
LINDSAYA PLICATA, n. Sp. 
L. rhizomate gracili repente, paleis lanceolatis fuscis membranaceis im- 
bricatis, stipitibus strictis nudis castaneis, frondibus rigidulis lanceolatis 
glabris simpliciter pinnatis, pinnis oblanceolatis obtusis sessilibus dimidio 
superiore parce lobatis, soris apicalibus globosis vel oblongis, indusio per- 
sistente glabro. 
Rhizome short-creeping, epigzous, about a line in diameter, 
densely clothed with minute spreading brown pales. Stipe wiry, 
brown-black, naked, stiffly erect, 3-5 in. long. Frond 4-8 in. 
long, under an inch broad, with a rachis exactly like the stipe. 
Pinne very numerous, very ascending, 4-3 in. long, rather rigid 
in texture, with veins so prominent that they appear plicate; 
lobes 8-5, confined to their upper half on both sides. Sori con- 
fined to the tips of the lobes ; outer valve of the indusium formed 
of the unaltered edge of the frond; inner rigid, pale green.— 
North-west Madagascar, Baron 5820! 5887! A very distinct 
species, near L. cultrata. 
PELLEA TRIPINNATA, n. sp. 
P. frondibus deltoideis tripinnatis utrinque viridibus glabris, rachidibus 
castaneis dense pilosis, pinnis lanceolatis erecto-patentibus petiolatis infimis 
maximis, piunulis deltoideis, segmentis tertiariis sessilibus contiguis paral- 
lelis lanceolatis vel lineari-oblongis, soris segmentorum marginem totam 
occupantibus, indusio lato glabro persistente. 
Rootstock not seen. Stipe short, wiry, castaneous. Frond 
under a foot long, moderately firm in texture, green and glabrous 
on both surfaces. Lower pinne the largest, distinctly petioled, 
4-5 in. long, an inch broad. Pinnules, only the lowest fully 
pinnate, an inch long, with tertiary segments under a line broad. 
Sori so broad that only a small vacant space is left between them. 
Final veins distant, free, erecto-patent, forked.—East Androna, 
Baron 5674!  Indusium of P. consobrina. Cutting of the small 
forms of P. hastata. 
