62 IIISTOrvY OF BRITISH FERNS, 



Genus d. SCOLOPENDRIUM, Smith. 



1. B,\-a\^2ire, Symons. — The only British species. Fronds 

 strap-shaped, entire. Plate XV. %. 1. 

 var. polyschides. — Fronds long, narrow, irregularly 



lobed, fertile. 

 tav. marginatum. — Fronds long, narrow, lobed, with a 



double, i.e. split margin, fertile. 

 var. crispnm. — Fronds elongated, much undulated at 



the margin, usually barren, 

 tr/r, multifidum. — Fronds usually shortened, multifid 



and tasselled at the apex ; barren or fertile. 

 var. laceratum. — Fronds broad, short, with the margin 



lobed, the lobes multifid-crispcd ; fertile. 



POLYPODIACEiE § LOMARIEiE. 



Genus 10. BLECHNUM, Linnwus. 



L B. Spicant, Both. — The only British species. Plate 

 XVI. fig. 2. 

 var. ramosum. — Fronds branched, the extremities of 

 the branches tasselled. 



