CHARACTERS OF TRIBES AND GENERA. 271 



ing oblique elongated areoles, transversely combined by an 

 elongated receptacle on both margins. Sori linear, con- 

 tinuous. Indusium linear, usually equal, or shorter with 

 the induseeform margin. 



Type. Lindscea ensifolia, Swartz. 



lllust. Hook, and Grev., Ic. ML, t. Ill ; Moore, Ind. FiL, 

 p. 23 A ; J. Sm., Ferns, Brit, and For., fig. 119 (non 

 Hook, and Bauer, Gen. FiL, t. 63, which is an Adiantum.) 



OBS. The central costa, and reticulated vernation, dis- 

 tinguishes this from Lindsece, and the sori being produced 

 on both margins from Synaphlebium. 



Brackenridge has characterised a genus which he calls 

 Diellia, of which he describes three species, the principal 

 difference being in the sori being slightly within the mar- 

 gin, and which is not altered in texture, and therefore can 

 scarcely be called an indusium ; it also differs in the sori 

 being in short pieces, not continuous, which is consequent 

 on the pinnaB being laciniated. The technical difference 

 seems to me to be scarcely sufficient to warrant its adoption 

 as a genus. 



* Sori continuous. (ScJiizoloma vera.) 



Sp. S ensifolia (Sw.) (v v.) ; S. Griffithiana (Hook. Sp. 

 Fil. 1., t. 68 B.) ; S. macrophylla, Kaulf. ; S. Fraseri 

 (Hook.) ; S. heterophylla (Dry.). 



OBS. The fronds of this species vary from simply pin- 

 nate, with entire lanceolate pinnae, 6 or more inches in 

 length, to bipinnate, with short, oblong, oblique pinnules, 

 in which the venation is occasionally free. 



** Sori sub-intramarginal, interrupted. (Diellia, Brack.) 

 S. erecta (Brack.) ; S. pumila (Brack.) ; S. falcata (Brack.) 



The three latter species are natives of the Sandwich 

 Islands (Brackenridge) ; it is probable they are only 



