30 POLYroDIACPLE OF THE THILIPPINE ISLANLS. 



broad, cut down one-third of the way to the midrib into triangular, acute, 

 subfalcate lobes, the lower ones dwindling down suddenly to mere auricles, 

 coriaceous, lower surface, like the rachis, densely pubescent; 8 to 10 

 veinlets on each side; sori subterminal, indusiate. 



Luzon, Cuming 254; Cagayan-Luzon, Warburg 12206, 12212; Lepanto 

 and Rizal, Loher; Nueva Ecija, Merrill 283, 284; Benguet, Elmer 6486; 

 Mindoro, Merrill 879; Davao, ^Varhurg 14097, Copeland 326, 447. 



India across Polynesia. 



(48) N. loherianum (Christ, Bull. Herb. Boiss. 6:191). Rhizome 

 creeping; stipes subtufted, 30 cm. high, sparsely scaly at the base, 

 densely but closely strigose-pubescent above, as are the rachis and veins; 

 frond deltoid-ovate (aside from some auricles representing the lowest 

 pinnae), 30 cm. high, 18 to 20 cm. broad, acuminate; pinnae 10 cm. long, 



2 cm. broad, horizontal, lanceolate, acuminate, sessile, cleft down to 



3 mm. from the midrib into obtuse, oblong, falcate . lobes 3 mm. broad, 

 subcoriaceous, short-pilose, ash-brown; veinlets about 12 pairs, only the 

 lowest anastomosing, and these not always; sori small, marginal, crowded, 

 with pilose indusia. 



Montalban, Rizal, Loher. 



(49) N. invisum C'arruth. Rhizome stout, wide-creeping; stipe 30 cm. 

 or more high, stout, brownish, villous; frond 45 to 60 cm. high, 20 to 

 30 cm. broad; pinnae numerous, 10 to 15 cm. long, 1 cm. or more broad, 

 cut about one-third of the way to the midrib into sharp, triangular, 

 falcate lobes, subcoriaceous, the lower ones distant and dwarfed; rachis 

 and lower surface villous; veinlets 6 to 8 on each side; sori in rows 

 close to the midrib, indusiate; capsules setose. 



Moimt Mariveles, Warhtirg 12759; Tayabas, Warhurg 12509. 

 Polynesia. 



(50) N. hirsutum .J. Sm., Presl. Stipes 100 cm. more or less high, scaly 

 at tlie base, closely hirsute toward the top; frond 100 to 200 cm. high, 

 50 cm. or more broad; pinnae 20 to 35 cm. long, narrowly linear, acumi- 

 nate, incised about half way to the midrib into obtuse, falcate lobes, 

 subcoriaceous, closely glandular beneath ; rachis densely but closely hirsute, 

 surfaces very sparsely hairy; veinlets about 8 on each side; sori medial 

 on them. 



Luzon, Cuming 82; San Ramon, Copeland 751, a form with about 13 

 veinlets on each side, the sori reaching most of their length. 

 Celebes. 



(51) N. glandulosum J. Sm. Stipes tufted, 30 cm. or more long, 

 naked or slightly villous; frond 30 cm. or more high, 10 to 15 cm. broad; 

 pinnae 8 to 10 pairs, spreading, larger and closer on the sterile frond, 

 6 to 10 cm. long, 2 to 3 cm. broad, entire or nearly so, truncate and 

 sometimes auricled at the base, papyraceo-herbaceous ; rachis and lower 

 surface naked or slightly villous, sometimes glandular ; fertile pinnae 

 somewhat contracted; veinlets 4 to 8 on a side, with the sori close to 

 the midrib, indusiate. Near A', uropht/llum. 



Luzon, Cuming 16; Leyte, Cuming 298. 

 Malaya. 



