Botany. 65 



153. THLASPI arvensis, L. (PENNYCRESS), 5 8, A. Casual in 

 cultiv. fields ; not uncommon. 



1. Chalk-pit, Birchwood Corner to Dartford Heath, '99. 



C.H.G. 



2. Between Bexley and Swanley, '02. C.H.G. 



3. Beckenham, Keston, etc., '97. Sc. 



4. Scattered about Avery Hill (introd.), '05. L.C.C. 



5. Field lane, between Bostal Heath and Wickham Lane, 



abundant, '07. J.F.B. 



156. IBERIS amara, L. (CANDYTUFT). Colonist, a weed of cultiva- 



tion ; probably garden outcasts. 



a. Gravel-pit, Shooter's Hill, '36. 



157. TEESDALEA nudicaulis, R.Br. 46, A. A North of England 



pi. ; dry sandy ground, heaths ; rare. 



1. Com. in the cultiv. parts of Avery Hill, no doubt 



introd. in the first place as seeds in soil attached to 

 the roots of introd. pis., '06. L.C.C. 



158. HUTCHINSIA petraea, R.Br. An extinct alien. 



a. Eltham Churchyard (1835), on a wall which was 

 pulled down in '93 (Dod). It grew there in com- 

 pany with CENTRANTHUS CALCITRAPA, another rare 

 alien ; but both were originally put there. 



159. ISATIS tinctoria, L. (WOAD). 



a. Woolwich, nr. Church (1763) ; Keston and West 

 Wickham (old records). 



BUNIAS orientalis, L. Casual ; very rare. 



1 Crossness ; Plumstead ; Woolwich Arsenal. Dod. 



2. A few pis. abt. Hayes and Beckenham, '97. Sc. 



3. Sevenoaks Road. Halstead, '02. W.H.G. 



4. Keston Common, '03. W.H.G. 



160. CAKILE maritima, Scop. (SEA ROCKET), 68, A. Sandy sea- 



shores. 



1. On dredged river gravel, Woolwich Arsenal. Dod. 



RAPISTRUM rugosum, All. Alien. 



1. Arable field near Bellingham Rly. Stn., '04. W.H.G. 



162. RAPHANUS raphanistrum, L. (WILD RADISH). Colonist ; 

 not uncommon in arable fields. 



1. Same field as Rapistrum, '04. W.H.G. 



2. Fields betw. Eltham and Chislehurst, '06. L.C.C. 

 F 



