POLTGONACEiE. 241 



Roadsides and waste ground ; rather common. P. June — August. 

 I. Harefield ! ; Newb. Harrow Weald Common in several places. 

 II. Bet. West Drayton and Yewsley ! ; Newb. 



III. Road from Hounslow to Hanworth in several places. 



IV. By the clay-pits, Harrow Weald. Waste ground by the roadside at 



Child's Hill turnpike gate. 

 V. Brickfields, Wyke Green. 

 VIL Camden Terrace, Camden Town, and other roads to the north of Lon- 

 don, Sowerby ; Herb. Mies. Brit, and E. B. Supp. Bet. Hampstead 

 and Camden Town, 1862, Syme ; Phyt. iv. 861. On mud thrown 

 out on the Lower Heath, Hampstead, 1865; Syme. Parson's Green; 

 Britten, Abundant in a brickfield by the South Heath, 1866. 

 First record : Sowerby, about 1832. The figure in Brit. Ent. xvi. t. 191, 

 called in the text B. pratensis and ' gathered at Chiswiek by John 

 Lindley, Esq.' is evidently B. obtusifolius. 



581. R. crispus, L. Curled Dock. 



Lapathiimfol. acuta crispo, C. B. P. (Blackst.). 

 Cyb. Br. ii. 343. Syme E. B. viii. t. 1218. 



Roadsides, pastures, and waste places ; very common. P. June — August. 

 Through all the districts. 

 VII. Frequent. [River wall of the Temple Gardens.] [Courtyard of 



Burlington House.] South Heath, Hampstead. Primrose Hill. 



Blackstock Lane, Highbury. Zoological Gardens. Parson's Green. 



Isle of Dogs. 

 First record : Blackstone, 1737- 



582. R. Hydrolapatbum, Huds. Great Water Bock. 

 Lapathim aquat. fol. cubitali, C. B. P. (Blackst.). R. aqicaticus, Sm. 



(Winch, Irv.). 

 Sides of streams and ponds ; common. P. July, August. 

 I. Harefield ! ; Blackst. Fasc. 50. Colne, near Iver Bridge ! ; Newb. 

 IL Ditches in Stanwell and Staines Moors, plentiful. Staines Common. 

 Ponds in Bushey Park ! ; Winch MS8. Hampton ! ; Newb. 



III. By the Cran, Hatton, Hounslow Heath, Twickenham. By the Duke's 



River, Isleworth. Twickenham Park. 



IV. Ponds, Hampstead ; Irv. M8S. 



V. Canal; Melv. 66. Near Twyford ! ; Newb. Canal at Brentford; 

 Hemsley. Banks of Thames, Fulham ; Faulkner, 22. 



VI. Edmonton. 



VII. By the reservoirs in Ken Wood grounds. Ditches, Hackney Wick. 

 First record: Blackstone, 17 ZT . 



583. R. Acetosa, L. Sorrel. 

 Acetosa pratensis, C. B. P. (Blackst.). 

 Cyb. Br. ii. 349. Syme E. B. viii. t. 1223. 



