﻿71. POLYPODIUM. § 2. PROSAPTIA. 616 



(109) P. Sarasinornm, ». A. ». K.,* P. Friderici et Pauli, Christ, 

 Ann. Btz., XIX, 37 (not XV, 148); Davallia Friderici et Pauli, Christ, 1. c, 

 XV, 94, tab. XIV, fig. 10, a — d; C. Chr., Ind. Pil. ; Acrosorus friderici et 

 pauli, Copel., Philipp. Journ., I, Suppl., 159. 



Rhizome woody, ascending, the scales few, ovate, reddish-brown. Fronds 

 numerous, 1 5 — 20 c.M. long, ligulate, + 6 m.M. broad, narrowed towards the 

 apex, pinnate. Pinnae deltoid, bluntish, dr 2 m.M. each way, close, 60 — 90 on 

 each side, the lower ones gradually becoming shorter. Texture thick, spongy, 

 but firm-coriaceous when dry; veins inconspicuous, hidden, 1 to each pinna. 

 Sori occupying the upper half of the fronds, 1 to each pinna. Soriferous pin- 

 nae slightly narrowed near the base, the upper part subclavate, thickened, with 

 the sori solitary, immersed in + deep, marginal, subterminal depressions. 



Celebes. 



* (110a) P. serraeforme, J. ««»., Journ. of Bot., Ill, 394; Davallia 

 alala, BL, Rac, Flor. Btz., I, 132; C. Chr., Ind. Pil.; D. Emersoni, Hk. Sf 

 Grev., Ic. Fil., tab. CV ; D. serraeformis, Wall, (oldest name) ; Prosaptia Emersoni, 

 Pr., Bedd., Ferns S.I., tab. XX; Pr. serraeformis, Christ, Bull. Herb. Boiss., VI, 

 143; Pr. alata, Christ, Copel., Philipp. Journ., 1, Suppl., 158, tab. XIV, B. 



Rhizome short, the scales dense, ciliated. Fronds sessile, tufted or sub- 

 tufted, linear-lanceolate, 15 — 30 c.M. long, 2 — 3 c.M. broad, narrowed towards 

 both ends, cut + V2 — ^s-way down to the costa into numerous, linear-oblong, 

 spreading or suboblique, blunt lobes, except in the lower part, which is often 

 entire, repand or sinuate with short, deltoid lobes. Texture coriaceous ; under 

 surface covered with scattered, short, acute glands or hairs. Sori 1 — 12 to 

 a lobe, closely placed round the edge, especially near the apex, deeply sunk 

 in submarginal, indusium-like depressions. 



Trap. Asia, Samoa. 



(llOb) V. polymorphum, ». a. t?. «.,• Prosaptia polymorpha, Copel., 

 Philipp. Journ., II, 136. 



Differs from P. serraeforme, /. Sm. by the broader and less truncate 

 segments and the sori immersed in obtuse teeth. Fronds to ± 40 c.M. long, 

 3 c.M. broad, acuminate. Segments oblong, obtuse or subacute, the lower 

 gradually passing into a wavy wing 5 — 8 c.M. long, entire at the base 

 and narrowed into a short, slender stipe. Sori ± 5 to a segment, not re- 

 stricted to the apical part. 



Mindoro. 



