8i4 APPENDIX. 22. DRYOPTERIS. 



(25) O. patens, O. Mtae. — Insert as a synomyn ; Polypodium pa- 

 lens, Sw., (oldest name). 



(26) D. exigua, O. Sfaie. ■ 4 nBort ac a eynonymi Lastraea gflnyuft) 

 ■J. Sm., (oMoct namo). See Supplemeiit 1. 



(27a) O. Foxii, ChrUt, Philipp. Journ., II, 208; Nephrodium Foxii, 

 Copel., MS. 



Rhizome short, creeping or ascending. Stipes close, 5 — 10 c.M. long, 

 stramineous, naked. Fronds lanceolate, 20 — 30 c.M. long, 6—9 c.M. broad, 

 narrowed at both ends. Pinnae lanceolate, acuminate, ascending, the lowest 

 remote, minute. Lower pinnulae + 8 m.M. long, 1 — I'/i m.M. broad, acute, 

 obscurely toothed, adnate, the others confluent, the higher tapering gradually 

 into a subserrate tail. Texture membranaceous; upper surface naked, lower 

 sparingly pubescent, the hairs whitish, short; veins + 5 on each side. Sori 

 medial; indusium naked, subpersistent. — Fronds sometimes reaching a size 

 4 X 3is large as indicated above. 



Luzon, Mindanao. 



* (54) D. fllix. uias, Schott. — Insert as a synonym: Polypodium 

 Filix mas, L., (oldest name). — Insert as a variety: — var. marginata; Ne- 

 phrodium Filix-Mas, Rich., var. marginala, Clarke, Trans. Linn. Soc, Bot., 2"'' 

 Series, I, 521, tab. LXXI; Aspidium marginatum. Wall,, List, No. 391 (not 

 366); F Lastraea Filix-Mas, Pr., var. elongata, Bedd., Handb. Ind. Ferns, 250; 

 .'' L. elongata, Pr., Bedd., Ferns S.I. tab. CXII; ? Nephrodium elongatum, 

 Hk. ^ Grev., Ic. Fil., tab. CCXXXIV; D. marginata, Christ, Philipp. Joiu-n., 

 II, 212. 



Tar. marginata: Fronds large, oblong or ovate-laiiceolate, not nar- 

 rowed at the base ; lowest pinnae falcate, often 2 — 3-pinnate ; main and par- 

 tial rachises nearly naked; tertiary segments oblong, obtuse, serrate or pin- 

 natifid sometimes nearly to the costa. — Luzon; Centr. China, North. India. 



War. parallelograuiuta : — Also found in Luzon. 



(34a) O. heleopteroides, Chri*t, Philipp. Journ., II, 212. 



Rhizome short, thick. Stipes fasciculate, + 6 — -17 c.M. long, those of 

 the barren fronds the shortest, brown at the base, rufo-stramineous, clothed 

 with diaphanous, subulate, pale-brown scales, ,those of the fertile fronds the 

 longest, librillose. Fronds dimorphous, the barren ones deltoid, ± 16 c.M. 



