16 EANUNCULACE^. 



Eunning ■water, rarely ponds ; rather common. P. 'June — July.' 

 I. In Harefield River, abundantly ; Blackst. Fasc. 85. Grand Junction 

 Canal, Harefield. Colne, near Yewsley ! ; Neuib. 

 II. Streams, Stanwell Moor. 



III. Duke's Eiver, Isleworth, and Twickenham, abundant, but does not 

 flower. Cran on Hounslow Heath. 

 V. Pond near Kew Bridge Railway Station ! ; Newb. 



VI. In the Lea, E. F. ; Herb. Miis. Brit. Brook near AVarren Lodge, 

 Edmonton (this is, perhaps, B. Backii, Wirtg.). 

 VII. Elver Lea, Hackney. 



First record: Blackstone. 1737. Abovmds in all the tributaries to the 

 Thames in this county, growing luxuriantly, but rarely flowering. On 

 Hounslow Heath we noticed a state growing on mud, in which the 

 segments of the leaves were short and curled, but which passed gradu- 

 ally into the deep-water form. 



9. R> liederaceus, L. Ivy-leaved Water-Crowfoot, 

 B. hed. aquaticus, Litgd. (Johns.). 



Cyb. Br. i. 80 ; iii. 374 ; Comp. 82. E. B. 2003, reproduced in Syme 

 E. B. i. t. 26 (drawn from a Middlesex specimen). 



Muddy places, marshes and ponds, common. P. May — August. 

 I. Harefield ; Blackst. Fasc. 83. Harrow Weald Common ; Melvill, 3. 

 Stanmore Heath. Eastcott. 



III. Hatch End. Hatton. Heston. Hounslow Heath. Whitton. 



IV. Hampstead Heath ! ; Johyis. Emmi. Harrow Weald ; Herb. Harr. 

 V. Chiswiok ; Lawson. Acton Green ! ; Newb. 



VI. Hadley ! ; Warren. 

 VII. [Hyde Park and Tothill fields; E. B. Hyde Park, 1817; Herb. 

 G. Sj i?.] Walham Green ; Morris (v. s.) New West End and 

 South Heath, Hampstead. 



First record: Johnson, 1632. The large deep-water form is 2?. cxnosus, 

 Guss. (non Bab.). A figure is added in Syme E. B. i. t. 26. 



10. R. sceleratus, L. Round-leaved Water-Crowfoot. 



B. rotundifol. forte ajpium risus (Johns.). B. patustris rotundifol., Ger. 



em. (Blackst.). 

 Cyb. Br. i. 90 ; iii. 574 ; Comp. 85. Curt. F. L. f. 2. 

 Ditches, ponds, and wet places ; very common. P. May — September. 

 In all the districts. 

 VII. Parson's Green. Near Chelsea Hospital. Ditch bet. Kensington 

 Gardens and Hyde Park. Highbury. Victoria Park. Isle of 

 Dogs. Kentish Town, &c. 



First record: Johnson, 1629. Accidentally omitted in MelviU's Harrow 

 Flora. 



