272 CHARACTERS OF TRIBES AND GENERA. 



different forms of one species. In the " Synopsis Filicum " 

 a fourth species is described as belonging- to this section, 

 under the specific name of " Michleriana" a native of New 

 Granada. It is described as being pinnate, 12 to 15 inches 

 in length, the pinnae 3 to 5 inches long, the veins forming 

 hexagonal areoles, with free included veinlets, which seems 

 to indicate its affinity with Dictyoxiphium ; its mode of 

 vernation is not described, and probably when that is 

 known it will be found not to belong to this tribe. 



152. GUERINIA, J. S/m. 

 Schizoloma sp. Gaud., Isoloma, Fee, Lindsay a, Hook. 



Caudex slender, sarmentose. Fronds lanceolate, pinnate, 

 6 to 9 inches long, smooth. Pinnae ovate oblong, J to f 

 of an inch long, falcate, sessile, articulate with the rachis ; 

 costse slightly excentric. Veins reticulate, obscure. Recep- 

 tacles marginal, immersed in an indusoid groove, forming a 

 linear continuous sorus. 



Type. Schizoloma Gueriniana, Gaud. 



Illust. Gaud, in Yoy. de L'Urinie, t. 18. 



OBS. The species on which this g->nus is founded differs 

 in general appearance from the true species of Schizoloma, 

 and especially in the pinnae being articulate with the rachis. 



It appears to be a rare Fern, as there is no specimen in 

 the Hookerian herbarium ; but the nature of the stipes of 

 fronds in my herbarium* induces me to believe it to have 

 articulate vernation. 



The presence of white dots on the upper side of the 

 pinnae gives it some claim to be ranked with Isoloma and 

 Nephrolepis, but till more of it is known I retain it here. 



Sp. G. articulata, J. Sm. (Schizoloma Gueriniana, Gaud.) 



Native of the Molucca Islands. 



* Now in the British Museum. 



