240 CHARACTERS OF TRIBES AND GENERA. 



128. PERANEMA, Don. (1825). 

 Sphceropteris, Wall., Hook. 8p. Fil. 



Vernation fasciculate, decumbent, squamose. Fronds 

 4 to 6 feet high, stipate, deltoid, decompound, ultimate 

 pinnules and lacinee sessile, linear oblong, obtuse, half an 

 inch long, pinnatifid, repand, or crenate. Veins forked 

 clavate, free. Sporangiferous receptacles medial pedicellate, 

 included within a calyciform indusium, forming globose 

 elevated sori. 



Type. Peranema cyatlieoides, Don. 



Illust. Hook, and Bauer Gen. Fil., t. 22 ; Schott. Gen. 

 Fil., t. 4 ; Moore Ind. Fil., p. 80, B. ; Hook. Syn. Fil., 

 t. 1, fig. 5. 



OBS. This genus also consists of a single species, a 

 native of Nepal and Sikkim. In general aspect it resem- 

 bles some of the large decompound species of Lastrea, such 

 as L. villosa. It is specially remarkable in the sori being 

 elevated above the surface of the frond, similar to the 

 genus Eupodium in the tribe Marattiacece, although the 

 calyciform indusium of this and the preceding genera is 

 similar to that of Cyathea ; nevertheless, their dwarf, 

 stemless habit, prevents their natural association with 

 tree Ferns. 



Sp. P. cyatheoides, Don. Bedd. F. S. Ind., pi. 73 (Sphcer- 

 opteris barlata, Wall.) 



OBS. The stipes of this Fern are densely covered with 

 hoary scales, which in its native places of growth imparts 

 to it an aged appearance. 



Tribe 15. CYATHE^E (Plate 15). 



Vernation terminal, fasciculate, forming tree-like stems, 

 50 or more feet high, Sori medial, round, rarely oblong. 



