CASTALIA 29 



Native. Lacustral. Rivers, ditches, and ponds. Common and 

 generally distributed along the rivers of the county. Abundant 

 in the Loddon and Thames. It varies considerably in the size of 

 the flowers. P. June- August. 

 First record. Nxjmphaea lutea. In slow rivers, Mavor's Agr. Berks, 1809. 

 Northcroft, Russell's Cat. 1839. 

 A form with very large flowers occurs in Southcote moat. 

 Kympliaea lutea is very frequently represented in pictures of Thames 

 scenery, and is found in all the bordering counties. 



CASTALIA, Salisb. Parad. Lend. i. t. 14 (1805). Nymphaea, Sm. I.e. 

 C. speciosa, Salisb. in Kon. and Sims, Ann. Bot. ii. (1806) 72. Wliite 



Water Lily. 

 Kympkaea alba, Linn. Sp. PI. 510 (1753^, and of Gerard. Castalia alba. 

 Top. Bot. 19. Syme, E. B. i. 76, t. 53. Nyman, 23. Baxt. tt. 181-2. 



Fl. Oxf. 16. 

 Native. Lacustral. Rivers, ponds, &c., in quiet waters. Common. 



P. May- August. 

 First record. Kymphaea alba major vulgaris, Park. 1251. In Windsor 



Lake. Blackstone, Spec. Bot. 60, 1746. 



1. Isis. Ditches about Oxford, Riifford in Purt. Midi. Fl. Abundant 



at intervals in the Thames from Chimney to Wolvercote. 

 Buscot Lake. Buckland Lake. Pond near Wytham. 



2. Ock. Abingdon Canal, Whiticell. Marcham, Walker. Sandford. 



Nuneham. Abingdon. Sutton Courtney. Dorchester. Walling- 

 ford. Mongewell. Culham. Lockinge Park. Oxford Waterworks 

 Reservoir. Radle^'. 



3. Pang. Fair Cross Pond, Hermitage, W. M. Rogers. Caversham, 



Phyt. In the Thames at intervals from Mongewell to Reading. 



4. Kennet. Wash Water, Russell's Cat. Kennet Canal between 



Newbury and Benliam. Aldermaston. Hampstead Marshall. 



5. Loddon. Windsor Lake, Blackstone. From the Loddon, Rudge in 



Herb. Brit. Mus. Thames near Temple, Mill. Near Sandford Mill. 

 Wargrave. Plentiful in the Loddon between Twyford and Loddon 

 Bridge. Wokingham. Bearwood Lake. Arborfield. Swallow- 

 field. White Knights. Stanlake. Hurst. Hurley. Windsor. 

 Virginia Water. Near Ascot. Binfield. Sandhurst. Frogmore. 

 Var. MINOR (DC. Syst. ii. 56), N. E. Brown, in E. B. Suppl. ed.3, 18. 

 From 'the ditch at the west side of a field at South Hinksev, near 

 the "Devil's Backbone," in flower July 31, 1844. The flowers when 

 pressed flat in a fully expanded state, measured only 3 j inches acro.ss.' 

 Baxter in Herb. Oxford. The same form has also been noticed in the 

 Abingdon Canal and in Virginia Water, but I do not think it is really 

 a variety, but only a form depending on local circumstances. 



