﻿71. POLYPODIUM. § 1. EUPOLYPODIUM. 6. COMPOSITAE. 613 



regularly 2-pinnate, 15 — 20 c.M. long, Vj^ — 5^2 c.M. broad. Pinnae nume- 

 rous, close, lanceolate, + 6 — 7 m.M. broad, regularly peclinato-pinnale with 

 narrow, linear, parallel, erecto-patent, 1 -nerved pinnulae not more than % 

 m.M. broad. Texture rather rigid; surfaces naked. Sori confined to a few 

 of the uppermost pinnae, solitary in the centre of the pinnulae. 

 Borneo. 



(1076) P. Yoderi, Copet, Philipp. Journ., I, Suppl., 161. 



Rhizome filiform, sparingly clothed with brown, ovate-lanceolate scales. 

 Stipes woody, clothed with reddish-black hairs, or glabrescent towards the 

 base. Fronds 15 — 25 c.M. long, lanceolate, the rachis pilose. Pinnae erecto- 

 patent, db 5 m.M. broad, contiguous, the rachis winged. Barren pinnulae 

 narrow, hardly '/^ m.M. broad at the base, somewhat broader towards the 

 apex, often bearing a single terminal hair; fertile pinnulae spathulate. Sori 

 solitary on the pinnulae, occupying the dilated portion. 



Mindoro, Panay. 



$ 2. PROSAPTIA. 



a. Fronds under i^\^ c.M. broad. Sori i to each tooth or segment. (Acrosorus). 

 b. Fronds toothed, lobed, or pinnatifid nearly or quite to the costa, the 

 teeth or segments deltoid, acute or bluntish, not narrowed at the base. 

 c. Fronds sharply toothed in the fertile region. 



(108a) P., Schlechteri. 

 c,c. Fronds bluntly lobed in the fertile region. 



(1086) P. exaltatum. 



(108c) P. tortile. 



b.b. Fronds pinnatifid nearly or quite to the costa, the fertile segments sub- 



clavate, narrowed at the base. (109) P- Sarasinorum. 



a.a. Fronds more than i^j^ c.M. broad when fully developed. Sori rarely i, 



commonly many to each segment. {Euprosaptia). 



1. Fronds lobed to + %-way down to the costa. (110a) P. serraeforme. 



(1106) P. polymorphum. 

 1.1. Fronds pinnatifid nearly or quite to the costa. 



3. Lobes entire, broadly toothed or sinuate. (HI) P- contiguum. 



3.2. Lobes crenate or serrate towards the apex. 



