122 umbellifertE. 



I. Harefield ! ; Blackst. Fasc. 91. Pinner. 



II. Staines. Near Sipson. Sunbury (a very large form). Towing-path, 

 Hampton Court ! ; Newb, 



III. Cran on Hounslow Heath. Twickenham. 



IV. Bet. Finchley Eoad Ry. Station and Finchley ; Newb. Golder's 



G-reen. 

 V. Canal, G-reenford ; Melv. 34. Hanwell ! ; Warren. 

 VI. Edmonton. 

 VII. Almost in every watery place about London ; Johns. Ger. 257. Pad- 

 dington Canal, 1815; Herb. G. cf- R. Clapton, 1830; Varenne. 

 South Heath, Hampstead. Millfield Lane. Blackstock Lane, 

 Highbury. Ditch bet. Hyde Park and Kensington Gardens. Eel- 

 brook Meadow, Parson's Green. Hackney Wick. Isle of Dogs. 



Var. $. H. repens, Koch. Slum repens, Jacq. Syme E. B. iv. t. 574, 

 II. Towing-path bet. Kingston Bridge and Hampton Court ; Bloxam. 

 VI. [Finchley Common, Woods ; Winch MSS.I 

 VII. [Tothill Fields, E. Forster ; Hhb. Mus. Brit, and B. G. 402.] South 

 Heath, Hampstead ; Irv. MS8. Eel-brook Meadow, J. A. ; Phyt. 

 N. S. i. 464. 

 Forster's specimens in Herb. Mus. Brit, are true repens; but small 

 examples of H. nodiflorum are frequently called by that name. 



First record : Johnson, 1633. 



271. H. inundatum, Koch. 



Sium minimum (Pet.). Sium pusillum fol, variis, N. D. (R. Syn. ii.). 

 8. minimum umbellatum fol. variis, Pluk. (Blackst.). Sison inunda- 

 tum, L. (Huds.). 

 Cyb. Br. i. 432 ; Comp. 188. Syme E. B. iv. t. 575. 

 Overflowed places, or in water ; rather common. P. June — September. 

 I. In the bogs on Harefield Common, plentifully; Blackst. Fasc. 94. 

 Harrow Weald Common ; Pinner Hill ; Melv. 34. Stanmore 

 Heath. 

 II. Bushey Park. 



III. Several ponds on Hounslow Heath; Pet. Midd. Hounslow Heath 



towards Hampton, S. Doody ; R. Syn. ii. 344 (specimens in Herb. 

 Budge and Bicks. H. S.). Near Hatton. 



IV. Bet. Kingsbury and Harrow; M. Sf G. 411. Hampstead Heath; 



Forst. Midd. Golder's Green ; Irv. MS 8. 

 V. Greenford; Cooper, 108. Apperton ; Melv. 34. 

 VII. Bet. Newington and Hornsey ; Huds. i. 104. In several parts of the 

 New River; M. Sf 6^.411. Eel-brook Meadow, Parson's Green, 

 1867. 

 First record: Petiver, 1695. 



