268 19. BALSAMINACE^. 



when kept in gardens. The dense tufts and short branches 

 or stems of G. lancastriense give that plant a very dif- 

 ferent first-sight aspect, compared with the long-branched 

 and diffusely growing G. sanguineum. 



241. Impatiens fulva, Nutl. 



Area (* * 3). 



Alien. Were not the American origin of this species 

 well known, any botanist now finding it in Sui-rey and 

 Middlesex, where it is so perfectly established, would seem 

 well entitled to pronounce it a genuine native of Britain. 

 The perfect naturalisation of the plant, across many miles 

 of country, is a valuable fact for botanists and geologists ; 

 and is one that should teach the former to be less hasty in 

 pronouncing local species "truly indigenous," which is so 

 much the custom with smatterers in the science. Begin- 

 ning considerably above Guildford, it may be traced at 

 intervals along the river Wey, down to its junction with 

 the Thames at Weybridge. Below this point, localities 

 occur On both sides of the Thames ; as at Walton, Kings- 

 ton, Barnes, Twickenham or Isleworth, &c. From Wey- 

 bridge, again, in another direction, it ascends the course 

 of the Basingtoke Canal, to Woking Heath, if not farther; 

 probably carried by boats or their towing ropes against 

 the course of the slow stream of a canal. ^^- a i^^<^^ Ji- 



242. Impatiens Noli-me-tangere, Linn. <4«. /^' '''''•/• ^|' 



Area (12 3 4)^J^* 7 (8) 9 (10) * 12 (13). . {ffj 

 South limit in Montgomeryshire (and Derbyshire ?) 

 North limit in Westmorland (and Yorkshire ?) 



