EANUNCULUS I I 



R. trichopJiyllus, which I have seen in that neighbourhood. I am inclined 

 to think that he has mistaken the one for the other. 

 R. Drouetii is found in all the neighbouring counties. 



B. heterophyllus, [Web, ex] Wigg. Prim. Fl. Holsat. 42 (1780). 



Batrachium heterophyllum, Fries, Summ. Veg. Scand. 140. R. aqiiatiUs, 

 L., and Index Kewensis. 



Top. Bot. 6. Syme, E. B. i. 21, t. 19. Nyman, 16. Fl. Oxf. 12. 

 Native. Lacustral. Kivers, ponds, and brooks. Local. P. May-July. 

 First record. Pangbourn, Prof. C. C. Babington, in Annals Nat. Hist. 

 ii. 16 (1 855 , 393. 



1. Isis. In a small stream in the meadows under Wytham woods. 



3. Pang. In the Thames at Pangbourn, Babington, 1. c. Frilsham. 

 Standford Dingley. 



5. Loddon. Wargrave. Near Littlewick Green. 



Probably I have often overlooked this plant, since the above are 

 the only places from which I have specimens. 



R. heterophijllus has been found in all the bordering counties. 



In the Sherardian Herbarium at Oxford Sibtliorp attaches a label of 

 B. heteropJiyllus to a sheet of three specimens, one of which is i?. hetero- 

 p?iyllus, the second is a weak form of B. peltatus, and the third, which is 

 labelled R. hederaceus aquatilis flore albo, Morison, is R. Baudotii. 



In the Student's Flora Sir J. Hooker describes the carpels as usually 

 glabrous ; in the Flora of Wartmckshire Mr. Bagnall says they are glabrous ; 

 while Dr. Boswell Syme says they are often hispid at the tip. 



B. peltatus, Schrank, Baier. Fl. ii. 103, teste Boreau. 



Batrachium i^eltatum, Presl, in Fl. Sic. i. 10, and Bercht. and Presl, 



Rostl. i. Ranun. 49. R. Jloribundus, Bab. Trans. Bot. Soc. Edin. v. 



(1858), 77. 

 Top. Bot. 6. Syme, E. B. i. 20, tt. 17 and 18. Nyman, 15. Fl. Oxf. 11. 

 Native. Lacustral. Ponds, ditches, streams, &c. Common and 



generally distributed. P. April-August. 

 First record. R. foJiis capillaceis circumscriptione vaga h'evioribus, near 



Oxford, Sir Joseph Banks, in Herb. Brit. Mus. about 1760. R. peltatus 



is probably the plant referred to as R. aquatilis. Dr. Noehden, 



ponds, &c., Mavors Agr. Berks, 1809. 



1. Isis. New Bridge, Boswell. Buscot. Lechlade. Near Eynsham. 



Near Wytham. 



2. Ock. Wantage. Lockinge. Abingdon. 



3. Pang. Hamj)stead Norris, Rogers. Goring, Boswell. Compton, 



Bruce, in Rep. of Bot. Rec. Club, 1886. Ilsley. Brickfields at Oare 

 Common. Curridge. Bucklebury. Basildon. Tidmarsh. 

 Marlstone. Tilehurst. 



4. Kennet. Beedon and Beedon Common, mostly on mud and 



without floating leaves, Rogers. Hampstead Marshall. Alder- 



