136 BLECHNUM L^VIGATUM. 



also pinnate, their width varying from one eighth to a quarter 

 of an incli. 



Veins simple^ or once or twice forked. 



Sori broad and costal, with broad involucres. 



Caudex stout, erect, and covered with large, shaggy, lanceolate, 

 pale ferruginous scales. 



Stipes light brown, scaly at the base, and from six to twelve 

 inches in length. 



Fronds from ten to eighteen inches in length. Length of 

 pinnae from two to two and a half inches, except the ultimate 

 pinna, which is twice this length. 



The copious pellucid dots on the pinnse render this an 

 interesting object for the microscope. 



For fronds my thanks are due to Mr. R. Sim, of Foot's 

 Cray Nursery, Kent. 



