CENTAUREA BIDENS. 327 



Centaurea montana T.. Alien. Casually subspontaneous 

 in Swaledale near the Round Howe ; James Ward. A native 

 of France and Belgium. 



Centaurea nigra L. British type. Native. Area general. 

 Range 0-550. (Common in grassy places, ascending to the 

 White Force scars, and the Main Limestone cliffs of Kisdon 

 and Copperthwaite Moor. The radiate form is not unfrequent. 



Centaurea Cyanus L. British type. Colonist. Area 

 8765432. Range o-ioo. Not unfrequent in cultivated 

 fields in the low country. 



Centaurea Scabiosa F. British type. Native. Area 

 98765432. Range 0-300. Frequent upon dry banks 

 throughout the lower zone, ascending to the summit of Leyburn 

 Shawl. 



Centaurea Calcitrapa L. Incognit. A specimen from 

 Sandsend is in the Middleton Herbarium in York Museum, but 

 the species has not been seen recently. 



Centaurea solstitialis L. Alien. Casually subspontane- 

 ous in cultivated fields at Leeming Lane; T. Siinpsoii\ 



Centaurea melitensis L. Alien. Below Yore Mills, 

 Aysgarth, plentiful in 1884-5 ; P- Arnold Lees. 



Calendula officinalis L. Alien. An occasional straggler 

 from garden cultivation. Middleton Tyas, Carperby, Carlton 

 Miniott, Esk side near Lealholme Bridge, etc. A native of 

 Spain and Italy. 



Bidens cernua L. English type. Native. Area 8.43. i . 

 Range o-ioo. Watery places in the low country, rare. Bolton- 

 on-Swale, Kirklington, Camphill, Swainby, Mawnby, Sheriff 

 Hutton, Castle Howard, Cayton Carr, and Strensall. 



Bidens tripartita L. English type. Native. Area 8 . 5 

 432. Range 0-150. In similar situations to the preceding, 

 and somewhat more frequent. Bolton-on-Swale, Cam])hill, 

 Mawnby, Newton (Cleveland), Castleton, Thirlby, Woodend, 

 Sandhutton, Bulmcr, 'I'errington, Raincliffe Wood near Scar- 

 borough. 



Jan. i8go. 



