4 FLORA OF CAMBRIDGESHIRE. 



road to Newton. — 3. Near the brook at Comberton. Hard- 

 wick. Little Eversden. — 4. Brick-pit by Ely road, to the 

 north of Chesterton. — 5. Pit by the road from Horningsey 

 to Clayhythe. Waterbeach Pen. — 6. Haddenham. 



3. R. heterophyllus Fr. Water Crowfoot. 



R. aquatilis, H. C. 130. Ranunculoides foliis variis, 

 M. M. 57. R. aquatilis a. M. PL 15. Relh. 225. 



Ponds and streams. P. May, June. 



1. Wood Ditton. Spring Head, Temple, Wilbraham. 

 Brinkley. Burrough-Green. Hinton. — 3. Sheep's-Green, 

 Cambridge. Eltisley. Long Stow!; Bourn; Kingston; 

 Toft; Croxton; N. — 4. Ditch by Madingley road near Cum- 

 ming's garden. Histon. Pit by Cuckoo Lane, Oakington. 

 By Mare "Way. Fen Drayton. — 5. Pit by road beyond 

 Horningsey. — 6. Haddenham!; N. By Aldreth Bridge. 

 Witchford. Witcham. — 7. Chatteris. Doddington. — 8. "Wis- 

 bech!; A. P. 



4. R. Bauddtii Godr. 



I suspect that a plant growing in a brick-pit by the Ely 

 road, to the north of Chesterton, belongs to this species, 

 although no floating leaves were found when I first noticed 

 it on June 10, 1859. 



5. R. floribundus Bab. 



Ponds, rare. P. June to September. 



First noticed by C. C. B. in 1856. 



1. Abundant in pits near "West Wratting. 



6. R. circinatus Sibth. 



R aquatilis y. M. PL 13. Eelh. 255. 

 Streams and ponds. P. June to August. 

 1. Hinton Brook. Hobson-conduit Stream, and Cow 

 Fen, Cambridge. Wilbraham. Little Linton. — 3. Sheep's- 



