FILICES 199 



so far as the writer can discover, only been observed 

 in artificial habitats. 



Stipa pennata, Pers. A native of dry mountain 

 pastures in Central and Southern Europe. It is fre- 

 quently cultivated in gardens, and doubtless owes its 

 few records in England to this fact. 



Tragus racemosa, Scop. A native of dry sandy places 

 in Southern Europe. It has become a noxious weed 

 in the sheep pastures of Australia. Its clinging seeds 

 become entangled in wool, and so get imported into 

 England and other countries. 



Triticum cylindricum, Ces. Mr. Hume has sent this 

 grass from Par in Cornwall, where it was doubtless 

 a casual introduction. Native of Southern Europe. 



Zea Mays, L. Indian Corn. In consequence of its 

 extensive use in England it occasionally appears on 

 waste ground about towns. 



FILICES. 



Asplenium fontanmn, Bern. A native of Southern 

 Europe. It has been recorded several times from walls 

 in various parts of England ; probably always originating 

 from gardens. 



Onoclea sensibilis, L. Native of North America and 

 Northern Asia. It has been recorded as an established 

 introduction in Yorkshire. 



