BRITTEN ON SPONTANEOUS EXOTICS. 533 



examining, and, in one instance, in a collection made upwards of seventy 

 years ago ; and, in conversation with some of the older botanists of the 

 district, I have invariably found that they knew the plant growing as it 

 does now, from their earliest recollections. Mr. Buxton's Flora of Man- 

 chester was published in 1849, and there the plant appears for the first 

 time as B. vulgaris var. intermedia. My acquaintance with it commenced 

 about this season sixteen years ago, from seeing the root-leaves offered for 

 sale in the market as a winter cress. Some year or two later, Mr. Baker 

 had a note upon it in the old Pliytologist, about which I communicated 

 with him, and the result was the identification of the plant by M. Boreau 

 himself with his B. intermedia. It is, I am of opinion, quite as little of an 

 introduced species as B. vulgaris, and certainly less so than B. prcecox ; the 

 true solution of the problem is, I believe, that it had for a long time been 

 confounded with the other species." 



P. 206. Erysimum or ientale, L. Mr. J. C. Melville informs me that 

 he has found it " at Woolmer, near Selborne, Hants, in tolerable plenty.' ' 



P. 206. E. Perofskianum, Fisch. Mr. W. G. Smith writes — " I found 

 several specimens in the brick-fields at Stoke Newington and Highbury 

 [Middlesex] ; I saw it also somewhere else close by, apparently wild, but 

 of course an escape from cultivation." 



Order V. — Eesedace^. 



Reseda Phyteuma, L. Occurs on the Middlesborough ballast-hills, 

 " near the mouth of the Tees on the Yorkshire side of the river." (North 

 Yorkshire, p. 308.) A native of the South of Europe. 



B. gracilis, L. Mr. Irvine records this from the Wandsworth steam- 

 boat pier locality. " A native of Naples, Dalmatia, and Austria." Phyt. 

 Hi., 334. N.S. 



R, odorata, L. This universally esteemed annual is, as might be 

 supposed, a frequent production of our London rubbish-heaps. I have 

 met with it this year in the grounds of Chelsea College and at Parson's 

 Green, in Middlesex ; and in Surrey, on the embankment by the Thames 

 at Battersea Park, where it was plentiful in two or three places ; it also 

 occurred in 1863 on Putney Heath. Mr. Winch records it from the bal- 

 last-hills of the Tyne and Wear, and '* two or three plants " have recently 

 occurred in this neighbourhood, " on about three year old ballast. West 

 Hartlepool." M. A. Lawson, in Transactions of Tyneside Naturalists Field 

 Club, v., 307. A native of Egypt. 



