118 CHARACTERS OF TRIBES AND GENERA. 



Type. Pteris piloselloides, Linn. 



Illust. Hook, and Bauer, Gen. Fil., t. 78, A; J. Sm. 

 Ferns, Brit, and For., fig. 16; Hook. Syn. Fil., t. 6, 

 fig. 58. 



OBS. This genus consists of the following species, all 

 natives of India, China, Malayan Peninsula and Islands. 

 The first, D. piloselloides, has the sorus when young fur- 

 nished with stellate pubescence, similar to Niphobolus, 

 while D. carnosum has the line of sporangia covered with 

 orbicular scales, analogous to Hymenolepis. This difference 

 led Presl to characterise this latter species as a distinct 

 genus, under the name Lemnophyllum, but I do not think 

 the character is of sufficient importance to warrant its 

 adoption as a genus. 



Sp. D. piloselloides (Linn.) (v v.) ; D. carnosum (Wall.) 

 (Lemnophyllum, Pr.) D. Cunningham i, Moore (D. carnosum, 

 J. Sm. non Watt.) ; D. ? rigidum, Hook. Sp. Fil. Ic. PI. t. 

 996. This is a native of Borneo, and on account of its 

 having no free veinlets, is probably not a true Drymoglossum. 

 Moore refers it to Schizolepton. 



34. HYMENOLEPIS, Kaulf. (1824). 

 Acrostichum sp. Linn. ; Hook. Sp. Fil. 



Surculum short, csespitose. Fronds simple, 6 to 12 inches 

 long, linear lanceolate, coriaceous, smooth, the upper por- 

 tion contracted and fertile, plicate and indusaeform, forming 

 a linear spike. Veins obscure. Venules compoundly anas- 

 tomosing. Receptacles elongated, compital. Sori linear, 

 continuous, transverse, confluent on the upper portion of 

 the fronds, furnished with numerous suborbicular hyaline 

 scales. 



Type. Acrostichum spicatum^ Linn. 



