60 HISTORY OF BRITISH FERNS. 



var. rhaeticum. — Pinnules narrow, distinct, linear, con- 

 vex, lobed. 



var. latifolium. — Pinnules broad ovate, crowded, irre- 

 gularly lobed. 



tar. molle. — Pinnules oblong, flat, lobed, connected by 

 "wing of racbis. 



var. marinum. — Fronds narrowed to the base, decum- 

 bent, pinnules oblong, with simple marginal tcctli, 

 racbis winged. 



Tar. nniltifidmn. — Pinnae and frond tasselled at the 

 extremities. Plate XI., upper figure. 



var. crispum. — Dwarf, irregularly branched, with the 

 ends tasselled. 



Genus 7. ASPLENIUM, Li /uncus. 



1. A. septentrionale, IIitlL — Frond linear-lanceolate, two- 



three-cleft. Plate XII. fig. 3. 



2. A. germanicum, ^Feiss. — Fronds linear, alternately pin- 



nate, pinna3 narrow wedge-shaped ; indusium entire. 

 Plate XIII. fig. S. 



3. A Ruta-muraria, Lin7ic(;us. — Fronds bipinnate, pinnules 



wedge-shaped at the base ; indusium jagged. Plate 

 XIII. fiiT. 1. 



o 



