862 



Leucojum (Bstivum, L. Last autumn, on passing the station for 

 this plant opposite Blackwall, I found it covered with mud from the 

 river, to the depth of at least three feet. I therefore fear that we shall 

 see no more of this beautiful species in the station where it has main- 

 tained itself for so long a time. 



Allium Scorodoprasum, L. I believe 1 saw this plant last July, 

 about two miles below Gravesend, growing on the landward side of 

 the ditch by the river-side. The ditch was too wide to leap across, 

 and too muddy to wade through ; so I was unable to get close to it ; 

 but I know no plant I could have mistaken for it, as I was within ten 

 yards of it. 



Anacharis ^Isinastrum, Bab. The ditch by the Thames-side be- 

 tween Kew and Richmond is now full of this plant. 



Echinochloa Crus-galli, Beauv. On the mud taken from the 

 Thames, at Battersea, many plants of this species sprung up, but 

 were buried before flowering, in the process of levelling the ground. 



Setaria glauca, L. With the last, at Battersea. I found only a 

 single plant ; but Mr. Irvine observed it in considerable plenty. 



Alopecurus fulvuSf Sm. Epping Forest, near Wanstead ; Putney 

 Heath. Dr. J. A. Power finds it on Wandsworth Common. 



Glyceria Borreri, E. B. S. Very plentiful on Plumstead practice- 

 ground, with the Polypogons ; Greenhithe to Gravesend. 



Triticum laxum, Fr. Plentiful on the banks of the Thames and 

 Medway. Resembles T. repens rather than T. junceum ; but speci- 

 mens from Ramsgate, collected by Mr. Moore, approach the latter. 



Elymus geniculalus, Curt. I fear this plant must be erased from 

 the British Flora. It certainly does not grow in the old station near 

 Gravesend, where Mr. Irvine pointed out the locality to me where he 

 had found it about thirty years ago. 



Datura Stramonium, L. Near the windmill on Wimbledon Com- 

 mon. 



Melittis parvijlora, Lam. On the mud from the Thames at Bat- 

 tersea ; on a new quay at Wandsworth, plentiful, but in company with 

 Plantago lagopus, Eruca sativa. Hibiscus Trionum, and numerous 

 other plants that have no title to be considered as even naturalized. 

 Neither Mr. Irvine nor I could ascertain the source whence these had 

 come. 



J. T. Syme. 

 London, February 3, 1853. 



