CHARACTERS OF TRIBES AND GENERA. 267 



the genera Scliizolepton, Dictyoziphium, and Isoloma, which 

 although agreeing in the technical character of the sori, 

 are nevertheless widely distinct in vernation and habit, 

 as will be seen on reference to their characters in their 

 respective places. 



The species of this tribe are widely distributed, generally 

 natives of the tropics of both the Eastern and Western 

 hemispheres, a few extending to New Zealand in the 

 South. 



148. LINDS^A, Dry. (1793). 

 Hook. Sp. Fil. 



Vernation sarmentose, often short. Fronds distant or 

 contiguous and sub-fasciculate, simple, pinnate, or bi-tri- 

 pinnate ; pinnae and pinnules oblong, falcate, lunulate, 

 upper margin fertile only ; costa3 eccentric. Veins ra- 

 diating, or unilateral forked ; their apices (in the fertile 

 segments) combined by a transverse, marginal receptacle, 

 forming a linear, continuous or interrupted marginal 

 sorus. Indusium linear, its outer margin free, usually 

 shorter than the indu see form margin. 



Type. Lindscea trapeziformis, Dryander. 



Illust. Hook, and Bauer, Gen. Fil., t. 63, A ; Moore Ind. 

 Fil., p. 22 ; J. Sm. Ferns, Brit, and For., fig. 118 ; 

 Hook. Syn. Fil., t. 2, fig. 20, a. 



OBS. The fronds of some of the species of this genus 

 vary from being simply pinnate, to bi- or even tri-pinnate, 

 that authors have described the different forms as distinct 

 species. They are chiefly tropical, L. trichomanoides being 

 a native of New Zealand. 



* Fronds simple, cordate-reniform. 

 Sp. L. reniformis, Dry. (v v.) ; L. sagittata, Dry. (v v.) 



