POLYPODIES POLYPODIUM. 1 23 



on each side of the costa, about midway between it and the margin; rim of 

 cavity projecting but not overarching. 



Mount Majayjay, epiphytic on tree trunks, Steere. 



(23) P. subobliquatum Christ, Bull. Herb. Boiss. 6(1898) :197. Rhi- 

 zome short-creeping, sparsely scaly; stipe 1 to 2 cm. high, beset with very 

 short cinnamon-colored hairs; frond 10 to 15 cm. high, 2 cm. broad, oblong- 

 lanceolate ; pinnae obtuse, alternate with broad bases, remote, reduced toward 

 the ends of the frond, 2 mm. broad, coriacous, rufescent, glabrous; veinlets 

 oblique, simple, inconspicuous; sori 4 to 6 on each side of costa, ovate, 

 scarcely immersed, midway between costa and margin, rim of cavity plane, 

 not at all crater i form. 



Mount Mariveles, 1,420 m., Loher. This fern must be rare, as our rich 

 collections from its type locality contain no representative of the group 

 without more or less crateriform rim around the sorus. 



(24) P. papillosum Blume. Rhizome wide-creeping, subscaly; stipes 8 

 to 20 cm. high, firm, erect, almost glabrous; frond 30 to 50 cm. long, 4 to 

 6 cm. broad, drooping, abruptly acuminate, pinnate, lower pinnae not 

 reduced; pinnae close, horizontal, about 4 mm. broad, obtuse, serrate toward 

 the apex, herbaceous, glabrous; veinlets evident, forked; sori nearer the 

 margin than the costa, round, so immersed that they project, often more 

 than 1 mm. from the upper surface. 



Luzon, Cuming 185; Nueva Vizcaya, Merrill 342; Sorsogon, Baranda; 

 Davao, Copeland 972, 982, 1277. 

 Malaya. 



(25) P. Leysii Baker, Journ. Bot. 17 (1879), p. 66. 

 Sulu Archipelago, Burbidge. Description not available. 



Goniophlebium. 



(26) P. nummularium Mett. Rhizome wide-creeping, slender, clothed 

 with linear subulate, ferruginous scales; stipes scattered, of sterile frond 

 short, of fertile 6 to 10 cm. high; fronds dimorphous, entire, the sterile 

 suborbicular, scarcely 2 cm. long, the fertile 6 to 10 cm. long and narrowly 

 linear, both coriaceous, glabrous; veins immersed, obscure, anastomosing 

 to form a regular series of triangular and rhomboidal areolae; sori in a 

 single series, round, superficial, but their position marked on the upper 

 surface of the frond. 



Jala-Jala, Rizal, Meyen; Laguna, Cuming 121. 



(27) P. verrucosum Wall. Stipes 40 to 60 cm. high, glabrous, erect, 

 terete; frond 30 to 120 cm. high, 30 cm. broad, pinnate; pinnae numerous, 

 15 to 20 cm. long, about 2 cm. broad, entire, coriaceous, glabrous or nearly 

 so; veins forming several rows of areolse; sori confined to the costal areolae, 

 immersed so as to form distinct papillae on the upper surface. 



Sorsogon and Bataan Island, Baranda; Davao, Warburg 14155. 



Malacca to northern Australia. 



P. (Goniophlebium) phlebodioides Copeland (ined.) is a still larger 

 fern with the bases of the pinnae acute, and mostly three rows of areolae, 

 differing from P. verrucosum in that the pinnae are broadly serrate. 



Mount Apo. 



