11(3 



ASPIDIUM FILIX-MAS, Yar. Willisonii. 

 Lowe. 



PLATE XI. VIII. — B. 



Lastrca Jilix-mas, var. wi.Uisonii. Stansfield, MS. 



Axpidium — Shield-Fern. Filicr-mas — Male-Fern. Willisonii — Named 



after Mr. Willison, tlie discoverer. 



In thk Skction Lastre.\ of Authors. 



This singular variety of the British. Male-Fern was discovcreil, 

 in 1859, near Whitby, Yorkshire, by Mr. A^^illison. 



The fronds are narrow and attenuated, the pinna? are also 

 narrow and prolonged. Pinnules short, somewhat eroded, and 

 decurrent. 



Length of frond from twelve to twenty-four inches. 



]My thanks are due to ^Ir. C. Monkman, of Malton, for a 

 frond of this variety. 



