CEDCIFER^. 37 



IV. Harrow Weald. Bet. Whitchurch and Stanmore. Near Bishop's 



Wood. 

 V. By canal, Greenford ; Melvill, 10. Near Ealing ; Britten. 

 VI. Colney Hatch ; Herb. Hardw. Edmonton. 



VIL [Banks at the back of Old Street ; and in the way to Islington ; Johns. 



Ger. 245.] Upper Clapton ; Cherry. Near South Heath, Hamp- 



stead. Roadside, Kensington Gore, one plant. i 



First record: Johnson-, 1633; also the first notice as British. This 



species is grown for ' small salad ; ' hence, no doubt, its origin in 



some of the above stations. 



DIPLOTAXIS, Cand. 



.57. D. tenuifoUa, DC. Brassica tenuifolia, Bois. (Syme). Sinapis 

 tenuifolia, ' Br! (L. Cat.). 

 Eruca sylvestris (Ger.). Sinapi sylvestre minus Bursce-pastoris folio, Lob. 

 (Johns.). E. sylv. major lutea caule aspera (Buddie). Brassica Eru- 

 castrum, L. (Huds. I.). Brassica muralis (Huds. II.). Sisymbrium 

 tenttifolium, L. (Smith.) 

 Cyb. Br. i. 163 ; iii. 386 ; Comp. 104. Curt. F. L. f. 3. 

 On old walls and rubbish ; rare. P. July — September. 

 VII. Most brick and stone walls about London covered with it ; Ger. 1 92. 

 [Hampstead Heath ; .Johns. Emim.] [On the walls of the City in 

 great plenty ; Mill. Bot. Off. 189.] [Chelsea, Tower Ditch, &e. ; 

 Newton MS8.] [On London Wall, bet. Cripplegate and Bishopsgate ; 

 wall of Charterhouse; Pet. Midd., Bot. Lond. and Herb. Pet. 152, 

 10.] [Walls round the Tower ; back of Bedlam ; near Hyde Park ; 

 Curt. Fl. Lond.'l [London Bridge, Mr. Jones ; With. iii. 593 ; and Herb. 

 Linn. Soc.'\ [Wall near Hyde Park Corner, 1817; Herb. G. ^ li. 

 We have also seen plants from this wall collected in 1821.] [WaUs 

 in Church Lane and Silver Street, Kensington ; Mag. Nat. Hist. ix. 

 90.] Roadside bet. Kentish Town and the floor-cloth manufactory ; 

 Irv. MSS. Westminster School wall ! ; Mcwreight, 22. It still 

 grows there, in front of Lord John Thynne's house in the School- 

 yard, 1867. Upper Clapton; Cherry. Near Parson's Green; Britten. 

 Waste ground at Hammersmith. Bet. Chelsea Hospital and the 

 river. 

 First record : Gerarde, 1597 ; also the first notice as a British plant. It 

 is mentioned as growing abundantly on the walls of London by almost 

 all subsequent authors on British plants, and there are many specimens 

 in the old herbaria. Tliougli now much less common it is still to be 

 found on a few old walls in town. 



58. * D. muralis, Z)C, Brassica muralis, 5om. (Syme). Sinapis muralis, 

 '£r.'(L. Cat.). 

 Cyb. Br. i. 164 ; iii. 386 ; Comp. 105. Syme E. B. i. t. 94. 



