Leonard — Genus Taenitis, with Notes on remaining Taenitidinae. 265 



very numerous. But there are none in the fertile leaf of Drymoglossum 

 (Fig. 8, b), and a commissural vein is seen to run underneath the sorus, as in 

 Taenitis. At points where interruptions of the sorus occur, the commissural 

 vein is also missing, showing that it bears the same relation to the sorus as 



Fig. S. — Drymoglossum carnosum. 

 (a) Venation of sterile leaf, (b) Venation of fertile leaf. 



does the similar vein in Taenitis and Blechnum. The natural conclusion is 

 that the linear sorus of Drymoglossum is really a fusion-sorus of the same 

 nature as that of 1'aenitis, or Blechnum. 



Paltonium. 

 The genus Faltonium was first named by Presl in 1849. Diels gives 

 it the title of Heteropteris after Fee, and it was also described as a species of 

 Taenitis, as T. lanceolata, by K. Brown, in 1868. It is not unlike Drymo- 

 glossum in the slender straggling stem, but the leaves, which are linear, 

 differ in the absence of dimorphism, and they are broader than the fertile 

 leaves of Drymoglossum. There is a linear sorus over which the margin 

 curls, forming a false indusium. There are only two species, of which 

 P. lanceolalum was available for examination, from collections by Professor 



Bower, in Jamaica. 



2u2 



