56 I'OLYPODIACE.IO OF THE I'HILIPriNE ISLANliS. 



rather bluntly toothed, oblong, rhomboidal pinnules; texture subcoriaceous; 

 veins beneath prominently raised and, like the rachises, more or less hairy; 

 sori 2 to 12 to a pinnule, small, placed at the base of the sinuses. 



Luzon, Cuming 95; Tonglon, 2,250 m., Loher 46. 



India to Hawaii and Fiji. 



(4) M. rhomboidea (Wall.) Presl. Different from M. strigosa, of 

 which it is placed as a variety in Synopsis Filicum, in being larger through- 

 out, the lower pinnules lanceolate-deltoid, 4 cm. long, cut down nearly to 

 the rachis into oblong lobes. 



Baguio, Loher. 

 India. 



(5) M. philippinensis Harrington, Journ. Linn. Soc. 16:27 (1878). 

 Caudex clothed thickly with narrow rufous scales; stipe about 15 cm. 

 high, dark brown, with a few scales below like those of the caudex, 

 glabrous above ; frond deltoid, 8 to 20 cm. long, with about the same width ; 

 rachis glabrous ; lower pinnse deltoid and again pinnate, the upper becoming 

 simple, at the apex confluent; pinnules linear, crenately lobed, with the 

 divisions extending halfway to the midrib; the first pinnules on the lower 

 side much larger than the others; texture coriaceous; surface glabrous; 

 venules immersed, ascending; involucre decidedly intramarginal, broader 

 than deep. (Near D. amboi/tiensis Baker.) 



Mount Majayjay, Luzon, Steere. 



(6) M. platyphylla (Don.) J. Sm. Rhizome creeping, stovit, scaly; 

 stipe 60 to 100 cm. high, firm, erect; frond 1 m. long, tripinnatifid; lower 

 pinnse 30 to 40 long, 15 to 25 cm. broad, with distant linear lanceolate 

 pinnules, which are cut nearly to the rachis below into broad, bluntish, 

 toothed, oblong-deltoid lobes; texture subcoriaceous, both surfaces naked; 

 sori 2 to 12 to a segment, placed one in each tooth a short distance from 

 the edge, about 2 mm. across. 



Baguio, Loher 43. 

 Ceylon to the Himalayas. 



(7) M. Speluncae (L.) Moore. Rhizome horizontal; stipe strong, 3 to 

 10 dm. high, stramineous, minutely squamulose; frond I to 2 m. high, half 

 as broad, deltoid, usually qviadripinnatifid ; lower pinnae, ovate-lanceolate; 

 pinnules lanceolate, cut down to a winged rachis into toothed or pinnatifid 

 lobes, the lowest lobe on the upper side the largest; texture herbaceous; 

 rachis and pinnules hairy, and indusia ornately so; veins conspicuous; 

 sori at the base of the teeth. 



Benguet, Loher, Elmer 6431; Province of Isabela, Warburg 11625; Mon- 

 talban, Warburg 12753; Tanay, Rizal, Ramos; Sampaloc, Tayabas, Warburg 

 12763; Malita, Davao, Copeland 665; Culion, Merrill 485. 



Around the Tropics. 



(18) ODONTOSORIA Tresl. 



Rhizome short; stipes therefore clustered, not articulate to the rhizome; 

 fronds at least bipinnate; ultimate divisions (in our species) cuneate; sori 

 terminal, at or very near the truncate apex of the segment; indusium 

 fixed by the base and sides. Two confused species. Normally terrestrial. 



