S30 THJi KATtJRALlSa?o 



SPONTANEOUS EXOTICS. 



By James Beitten. 



\ Continued from page 207.] 

 Order IV. — Crucifeii.e. 



Sisymbrium austriacum, Jacq. " Several luxuriant specimens were 

 collected in 1859 among the sand-hills on the north-east of Hartlepool, in 

 the neighbourhood of a large quantity of clayey soil, brought thither by a 

 temporary line of railway from the new docks ; so that most likely the 

 seeds have been originally introduced with foreign ballast, and lain dor- 

 mant until their removal has offered a favourable opportunity for germina- 

 tion." J. G. Baker in Phyt. vL, 720-1. 0.8. It is recorded doubtfully from 

 the Wandsworth waste ground in H.B.P. 701 ; and in Phyt. Hi., SS8.N.S., 

 is said to have been exceedingly common there, and self -propagated, grow- 

 ing " not only on the fresh soil, but on the hard-trodden ground." I 

 collected what I believe to be this plant from the waste ground at Kew 

 Bridge, in 1863. A native of Austria. 



8. ColumncB, Jacq. Has " grown at Wandsworth steamboat pier 

 plentifully, during the preceding five or six years." H.B.P. 701. It is 

 not now to be found there. A native of the Levant. 



8. pannonicum, Jacq, This plant aj^pears to be well established at 

 Crosby, near Liverpool, where it was observed by Mr. Fisher, " in May, 

 1858, growing for about a hundred yards along the railway side ; it was in 

 great abundance, and I found had existed there some time, for the Rev. 

 W. M. Hind had specimens found some years since at the same place." 

 Here Mr. Fisher thinks " it may perhaps have been introduced among 

 seeds sown in the station-master's garden." See Phyt. in., 112. N.S. 

 This locality is perhaps identical with that of the *• Crosby sand-hills," 

 where the plant is stated, in the Thirsk Fieport for 1862, to have been 

 '' plentiful for the last seven or eight years." [pp. 9, 10.) It also occurred 

 plentifully for a similar period at the Wandsworth steamboat pier locality 

 {see Phyt. as above) ; but it has now disappeared thence, in common with 

 most of the introduced species. It is a native of Hungary. 



Note. — 8. polyceratium, L., admitted into the London Catalogue on 

 account of its naturalisation at Bury, in Suffolk, would ai)pear to have no 

 stronger claims to that honour than the last-mentioned species. 



Malcolmia africana, Br. Was collected by Mr. Irvine in the Wands- 

 worth steamboat pier locality, where it was *' exceedingly common, appear- 



