52 P0LYP01)IACK.E OF THE PHILiri'INK ISLANDS. 



rhoiuboitlal lobes, tlie segments of wliich are deeply and finely inciso- 

 pinnatifid with sharp teeth; texture herbaceous; sori 2 to 6 to a segment, 

 small, placed at the base of the teeth. 



Baguio, Loher, a large form, with narrow lobes; Topping 307 ?. 



Cuming's 117 and 215 (Microlepia tenuifolia Presl), from Luzon, are 

 probably both this species. 



(15) SACCOLOMA Kaulfuss. 



Rhizome creeping, scaly, stipe not articulate to it; frond (in our 

 species) finely dissected; sori near, not on, the margin, small, numerous; 

 indusium short, attached by the broad base, thin. Our species is a large 

 terrestrial fern. 



S. moluccanum (Bl.) Mett. Rhizome creeping, clothed with large 

 pale-brown scales; stipe erect, about 3 dm. high, sparsely scaly; frond 

 6 to 10 dm. high by half as broad, quadripinnatifid, deltoid; pinnae lance- 

 olate; the segments of the pinnules cut down to the rachis into broadly 

 toothed, oblong lobes; texture membranous or subcoriaceous, both sur- 

 faces naked or nearly so; sori small, in the teeth, near the base. 



Benguet, Loher 49, Elmer 6289. 



Malaya and Polynesia. 



(16) DAVALLIA Smith. 



Rhizome short or creeping, scaly, the stipes articulate to it; sori at 

 or very near the margin; indusium usually elongate, attached at the 

 base and sides, the margin of the frond often so modified as to resemble 

 it. Mostly epiphji;ic ferns. The two sections would better be treated as 

 separate genera. 



1. Prosaptia ; fronds elongate, pinnatifid or simply pinnate. 



2. Frond narrowly linear (1) D. exaltata 



2. Frond not narrowly linear. 



3. Segments lobed (2) D. contigua 



3. Segments nearly entire (3) D. alata 



1. Eudavallia ; fronds deltoid, at least tripinnatifid (except 



D. wagneriana) . 



2. False veins present between the true ones. 



3. Sori flanked by prominent teeth (4) D. epiphitUa 



3. No prominent teeth (5) D. elegans 



2. No false veins. 



3. Sori marginal. 



4. Palese of rhizome brown (6) D. solida 



4. Palese whitish (7) D. bullata 



3. Sori not reaching the margin. 



1 T\- 4.- 4.1 J 1.. -J ( (8) D. decurrens 



4. Distinctly deltoid < 



I (9) D. divaricata 



4. Lowest pinnae not enlarged (10) D. wagneriana 



(1) D. exaltata Copeland. Rhizome short, densely invested with linear 

 brown chaff'; fronds sessile, crowded, pendent, half a meter long and less 

 than a centimeter wide, the lower third sterile, pinnatifid almost to the 

 rachis, the lower segments reduced; segments inequally triangular, coria- 

 ceous, obtuse, plane, glabrous; veins invisible; sori solitary in the apices 

 of the segments. 



