202 poltgonacejE. 



Waste ground. P. July to September. 

 Probably common throughout the county, although but 

 few localities are recorded in the Pens. 



7. R. pratensis M. and K. 



First noticed by Mr Newbould in 1848. 



1. Near Hinxton; N. — 2. Royston; N. — 3. Comberton. 

 Eversden; Toft; Kingston!; Crane's Lane; Bourn; Mtisley; 

 Gamlingay; N. — 4. Near the Observatory. By the Railway 

 bridge, Chesterton. By the river above Upware. Wash of 

 the old Ouse river below Aldreth Bridge, plentifully. Chil- 

 derley; Elsworth; N — 5. By the river at Upware. —6. Near 

 Roswell Pits, Ely. 



8. R. CllspuS Linn. 



Lapathum folio aeuto erispo, R. C. App. ii. 11 ; Cat. Angl. 

 ed. 1, 187. B. crispus, M. PI. 8. Belh. 147. 



Waste and cultivated ground. P. June to August. 

 Common throughout the county. 



9. K,. Hydrolapathum Huds. Great Water Dock 



Lapathwm aquaticum I, sive aquaticum folio cubitali, 

 R. C. 85. M. M. 14. R. Britannica, M. PI. 9. R. aqua- 

 licus, Relh. ed. 3, 149. R. Hydrolapathwm, Relh. ed. 1, 

 491. 



Banks of streams and ditches. P. July, August. 



1. Cow Fen, Cambridge. — 2. Peat-holes, Triplow. River- 

 side, Ickleton. Between Whittlesford and Shelford. — • 

 3. Sheep's-Green, Cambridge. Harston; N. — 4. Chesterton. 

 Waterbeach. Swavesey. Fen Drayton. Aldreth Bridge. — 

 5. Fen Ditton. Wicken Fen.— 6. Ely. Aldreth. Witch- 

 ford. By Sandy's Cut; N— 7. Doddington Turf-fen. Chat- 

 teris. — 8. Newton. Wisbech. 



