506 
FILICES. 
[Poly podium. 
veinlets which do not reach the edge. Sori round, superficial, 4-6 to 
a pinna, placed at the tip of the veinlets. P. elasticum, Bory. P. 
asplenifolium, Bojer , Sort. Maur. 418, not Linn. 
Mauritius and Seychelles, on mossy trunks in the woods, frequent. Also 
Bourbon, Guinea, and common in Tropical America. 
14. P. parvulum, Bory ; Hook, and Baker, By n. Fit. 326. Root- 
stock short-creeping ; scales brown, lanceolate, imbricated. Stipes close, 
very short, wiry, naked. Prond lanceolate, erect, moderately firm in 
texture, glabrous, 4-6 in. long, |-f in. broad, cut down to the rachis 
into numerous linear entire subacute adnate pinnae T V in. broad, the 
lower ones gradually dwarfed. Veins pinnate in the pinnae, with dis- 
tant simple erecto-patent veinlets, which do not reach the edge. Sori 
round, superficial, 4-6 to each pinna, placed at the tip of the veinlets. 
P. Filicula, Bojer , Sort. Maur. 418, non Kaulf. 
Mauritius, on old trunks in woods of the Pouce range, etc. Also Bourbon. 
15. P. rigescens, Bory ; Sook. and Baker, Syn. Fit. 831. Root-stock 
wide-creeping, as thick as a quill, clothed with imbricated lanceolate 
dull brown scales. Stipes wiry, erect, naked, 1-2 in. long. Prond 
lanceolate, erect, coriaceous, glabrous, 3-6 in. long, f — \ in. broad, cut 
down to the rachis into very numerous adnate entire lanceolate 
obtuse pinnse ^ in. broad. Veins pinnate in the pinnse ; veinlets quite 
hidden. Sori round, superficial, 4-6 to a pinna, finally filling up the 
whole space between the midrib and edge. 
Mauritius, in woods of the Pouce and Quartier Militaire, Bojer. Also Bourbon, 
Guinea, and Tropical America. 
16. P. argyratum, Bory ; Sook. and Baker, Syn. Fil. 331. Root- 
stock woody, short-creeping ; scales dense, linear, bright brown. Stipes 
close, wiry, naked, 2-3 in. long. Prond lanceolate, coriaceous, white- 
mealy on the under surface, 6-10 in. long, 1J-3 in. broad, cut down 
to the rachis into very numerous close adnate entire linear pinnae £ in. 
broad at the base, narrowed gradually to the point. Veins copiously 
pinnate in the pinnae ; veinlets forked. Sori round, forming a row 
close to the edge of the pinnae. P. argyrophanes, Bory ; Bojer, Hort. 
Maur. 418. 
Mauritius, in the woods of Grandport and Bel Ombre. Also Bourbon. 
17. P. adnascens, Sw.j Sook. and Baker , Syn. Fil, 349. Root- 
stock slender, wide-creeping ; scales bright brown, linear, acuminate. 
Stipes distant, naked, \-l in. long. Pronds linear, simple, coriaceous, 
nearly naked on the upper, densely clothed with pale-brown tomentum 
made up of stellate hairs on the under surface, the fertile ones linear, 
4-6 in. long, in. broad, the barren ones as broad, but much shorter, 
with a shorter stipe. Veins fine, quite hidden. Sori small, round, 
