224 LYTHRACEAE 



Native. Lacustral Ponds, ditches, streams, &c. Locally common. 



P, May-August. 

 First recorded by the author in Jonrn. Botany, 248, 1884. 



1. Isis. Wytham. Near Kelmscott. Buscot. Near Lechlade. 



2. Ock. Marcham, Rep. of Bot. Exch. Club, 1892. Cothill. Shippon. 



Hagborne. Ferry Hinksey. Letcombe Regis. Blewbury. Wan- 

 tage. Lockinge. In a ditch on Abingdon Racecourse. Radley. 



3. Pang. Moulsford, Journ. Bot. 1. c. Twyford. Near Pangbourn. 



4. Kennet. Beenham. Greenham. Theale. Southcote. 



5. Loddon. Very fine on Coleman's Moor. Winkfield. Near 



Wargrave. Near Cookham. 

 C. obtusangvia occurs in all the bordering counties. 



LYTHRACEAE, Lindl. Nat. Syst. ed. 2, p. 180 (1837). 

 PEPLIS, Linn. Gen. n. 402 {Portula, Dill. Gen. 7). 



P. Portula, Linn. Sp. PI. 332 (1753). Water Purslane. 



Top. Bot. 172. Syme, E. B. iv. 4, t. 493. Nyman, 252. Fl. Oxf. 123. 



Native. Uliginal. Wet places and pond margins on heathy ground. 

 Locally common in the south-west, but very rare in the northern 

 part of the county. Ascends to 910 feet. P. July-September. 



First record. Bulmarsh Heath, Mr. S. Riidge, in Herb. Brit. Mus. 1800. 

 Bagley Wood, Mr. W. Baxter, in Walker's Fl. of Oxfordshire^ 1833. 



2. Ock. Bagley Wood, Baxter, in Walk. Fl. 



3. Pang. Cold Ash Common. Near Tilehurst. Near Fence Wood. 



4. Kennet. North Heath, Russell's Cat. Greenham Common, Stubbs, 



inBritt.Contr. Mortimer, ri</wa«7. Snelsmore, PTearer. Burghfield. 

 Aldermaston. Near Silchester. Walbury Hill, by Wigmoreasb 

 Pond. Hampstead Marshall. Inkpen. Newbury Wash. Near 

 Sandleford. Not uncommon in the heathy parts of this district. 



5. Loddon. Bulmarsh, Rudge. Watery Lane, Penny. Park Place. 



Warren Row, Stanton. Early, Tufnail. Ascot. Bagshot. Wel- 

 lington College. Long Moor. Risely. Finchampstead. Spen- 

 cer's Wood Common. Sandhurst. Ambarrow. Hurst Green. 

 Windsor Park. By Virginia Water. Bearwood. Easthampstead 

 Plain. Common in the heathy parts of this district. The 

 floating form, /. callitrichioides (A. Br.^; has been seen in pools 

 near Sandhurst and on Snelsmore Common, &c. 

 Peplis Portula is recorded for all the bordering counties except 

 E. Gloucestershire. 



IiYTHRUM, Linn. Gen. n. 532 {Salicaria, Tournefort, Inst. t. 129). 



Ii. Salicaria, Linn. Sp. PI. 446 (1753). Purple Loosestrife. 

 Top. Bot. 171. Syme, E. B. iv. 2, t. 491. Nyman, 251. Fl. Oxf. 122. 



