502 
FILICES. 
[Poly podium. 
Frond pinnatifid. 
Lobes very short, 1 -veined 9. P. serrulatum. 
Lobes oblong or lanceolate, with pinnate veining. 
Frond membranous, pendulous 10. P. sechellarum. 
Frond coriaceous, erect. 
Frond naked 11. P. leucosorum. 
Frond pubescent and white farinose . . . . 12. P. albobrunneum. 
Frond simply pinnate. 
Frond flaccid, pendulous, pubescent 13. P. cultratum. 
Frond stiff, erect, glabrous. 
Frond f-f in. broad. 
Not coriaceous ; veins distinct 14. P. parvulum. 
Coriaceous; veins hidden 15. P. rigescens. 
Frond 1-3 in. broad 16. P. argyratum. 
Subgenus IY. Niphobolus. Veins anastomosing copiously ; under 
surface of the frond densely tomentose. 
The only species 17. P. adnascens. 
Subgenus V. Phymatodes. Veins anastomising copiously. Fronds 
all of one kind, not tomentose beneath. 
Frond entire. 
Sori forming a single row between the midrib and 
edge. 
Stipes very short 18. P. lycopodioides. 
Stipes 1-2 In. long. 
Frond naked beneath 19. P. line are. 
Frond with scattered peltate scales beneath . . 20. P. lanceolatum. 
Sori copious, scattered 21. P. irioides. 
Frond pinnatifid 22. P. Phymatodes." 
Subgenus VI. Drynaria. Veins anastomosing copiously. Fronds 
naked beneath, the barren one very different from the fertile one. 
The only species 23. P. Willdenovij. 
1. P. obtusifolium, Desv. ; Hook, and Baker , Syn. Fil. 305. 
Rootstock erect ; scales brown, membranous, lanceolate. Stipes tufted, 
naked, slightly pilose, \-l ft. long. Frond oblong-lanceolate, bipinna- 
tifid, membranous, finely pilose on the ribs beneath, 1-2 feet long, 
6-10 in. broad at the middle, narrowed gradually to the base ; rachis 
scaleless, finely pubescent. Pinnae lanceolate, sessile, f-f in. broad, 
cut down to a narrow wing into oblong obtuse entire segments in. 
broad. Veins pinnate in the secondary segments, with 8-12 pairs of 
simple veinlets. Sori small, medial. Aspidium Desvauxii, Mett.; 
Kuhn , Fil. Afric. 131. 
Mauritius, in woods of the Pouce range, etc., Bojer ! Also Natal, Madagascar, 
and Tropical Africa. I have not seen an involucre, and so leave this here, but 
have great doubt whether it be not a variety of Nep hr odium contermimm. 
2. P. cyathesefolium, Desv. ; Hook, and Baker , Syn. Fil. ed. ii. 
306. Rootstock erect; scales dull brown, lanceolate, membranous. 
