XX TOPOGRAPHICAL REMAEKS. 



Gnaphalium sylvaticum. Narthesium ossifragum. 



Senecio sylvaticus. Rhynchospora alba (extinct). 



Arnoceris pusilla. Carex dioica (extinct). 



Hypochseris glabra (extinct). C. curta. 



Erica tetralix. Aira flexuosa. 



Erica cinerea. Nardus stricta. 



Vaccinium oxycoccos (extinct). Polystichum aculeatum (ex- 

 Teucrium Scorodonia. tinct). 



Centunculus minimus (ex- Blechnuin boreale. 



tinct). Lycopodium clavatum. 



Littorella laeustris (extinct). L. inundatum (extinct). 



Malaxis paludosa (extinct). Chara syncarpa. 



A small portion of a botanically interesting sandy dis- 

 trict occurs just within the eastern edge of the county. It 

 extends far into the counties of Suffolk and Norfolk, Mil- 

 denhall, Brandon and Thetford being situated in it. The 

 parish of Chippenham includes this small tract, which is 

 almost entirely situated between the village of that name 

 and the county of Suffolk. The soil consists chiefly of very 

 loose sand and gravel overlaying the chalk formation. Al- 

 though it is almost wholly under cultivation it produces 

 some peculiar plants : the following are especially deserving 

 of mention. 



Silene anglica. M. minima. 



S. Otites. Ornithopus perpusillus. 



Medicago falcata. Galium anglicum. 



M. sylvestris. Apera interrupta. 



The third of these smaller districts is the most changed 

 of them. It is situated at the extreme northern point of 



