112 POLYPODIACE.E OF THE PHILIPPINE ISLANDS. 



(52) DRYMOGLOSSUM Presl. 



Rhizome creeping; fronds simple and entire, dimorphous; veins anasto- 

 mosing; sori linear, parallel to the costa, mixed with peltate scales. Small 

 epiphytic ferns, with apparent affinity to Niphobolus, from which they 

 are distinguished by the form of the sorus. 



1. Sorus remote from margin (Lemmaphyllum Presl). 



2. Apex very obtuse (1) D. spatulatum 



2. Apex subacute (2) D. carnosum 



1. Sorus marginal (3) D, piloselloides 



(1) D. spatulatum Presl, Tent. Pterid. p. 227. Sterile frond elliptic- 

 lanceolate, obtuse, with acute base, fertile linear-spatulate, very obtuse, with 

 stipe 1 cm. long; sorus continuous but confined to the upper half of the 

 frond. 



Manila, Meyen. 



This species is distinguished from D. carnosum Hooker by the stipitate 

 but not decurrent, very obtuse fertile frond, and restriction of the sori 

 to its upper half: as the last character often marks a stage in development, 

 and D. carnosum is more or less stalked, D. spatulatum is a doubtfully 

 distinct species. There is no other record of any form of D. carnosum from 

 the Philippines, until the discovery of the following. 



(2) D. carnosum Hooker. Rhizome wide-creeping, slender, sparsely 

 scaly; the sterile frond 5 to 6 cm. long, on a stipe 1 to 2.5 cm. long, rather 

 obtuse, the fertile fronds linear-spatulate, about 5 cm. long, 6 mm. broad, on 

 a stipe 3 to 4.5 cm. long, subacute, attenuate to the stipe; texture coria- 

 ceous; areolse large, with few free usually hamate veinlets; sori nearer the 

 midrib than the margin. 



Mount Santo Tomas, Benguet, Elmer 6562. 

 Himalayas, Formosa, Amboyna. 



(3) D. piloselloides Presl. Rhizome firm, wide-creeping, with black 

 roots; sterile fronds obovate-elliptical 2 to 3 cm. long, 12 to 15 mm. broad, 

 fertile ones linear : oblong, 5 to 10 cm. long, 4 to 5 mm. broad, both narrowed 

 to a short stem, coriaceous; veins immersed, with copious free included 

 veinlets; sori in a broad continuous submarginal line. 



Luzon, Cuming 115, Steere; large long-stipitate sterile fronds collected by 

 Loher on Tonglon are ascribed by Christ to this species; Davao, Copeland 

 349. 



India to Celebes. 



(53) NIPHOBOLUS Kaulfuss. 



Rhizome creeping; fronds simple, almost always entire, coriaceous, with 

 stellate pubescence; veins anastomosing, with free included veinlets. Small 

 epiphytes, recognizable superficially by the narrow, rigid fronds. 



1. Areolse regular, with included veinlets running 

 toward margin. 

 2. Fronds not, or but slightly, dimorphous. 



3. Lower surface loosely and copiously woolly. 



4. Frond 2 to 3 cm. broad (1) N. fissus 



4. Frond about 1 cm. broad (2) N. ftocciger 



