150 86. GRAMINA. 



1268. Setaria verticillata, Beauv. 



Area (**345***** 11). 



Alien. This sj)ecies appears to have been found more 

 rarely, and usually under more suspicious circumstances, 

 than S. viridis ; nor is it unlikely that some of the sta- 

 tions on record are erroneous ; for example, that of Stoui'- 

 bridge (Scott) on the borders of Worcester and Stafford. 

 See also the Flora of Hertfordshire, where this one and 

 the other two species are deemed introductions in that 

 county, " brought with flax and cole fc>eed to the oil-mills." 



Setaria glauca, Beauv. 



Area (1 * 3). 



Alien. Reported to have been found in Somerset and 

 Hertfordshire, but in stations to which it had evidently 

 been introduced. A third comity, that of SuiTey, is given 

 in Hooker and Arnott's Flora, on authority of Mr. Borrer. 

 I had the advantage of accompanying Mr. Borrer to Wey- 

 bridge, on an after visit to the station, when we could not 

 see a single specimen remaining there ; nor have I seen 

 any on subsequent visits to the same spot. Dr. Brom- 

 field suggested (Phytol. iii. 1077) that S. glauca would be 

 found a native of Hants, equally with the other two 

 species. To me it seems an improbable expectation, for 

 S. glauca is too impatient of frost to become even natu- 

 ralized here. 



