282 COMPOSITAE 



3. Pang. Near Tilehurst. 



4. Kennet. Wash Water, Russell, I.e. By the riverside half a mile 



west of Reading, Lees, Rep. of Bot. Rec. Club, 1883. Sandleford, 

 Weaver. By the Emborne Stream. Knight's Bridge. Greenham 

 Common. Aldermaston. Mortimer West End Pond. Theale. 

 Been ham. South cote. 



5. Ijoddon. Wellington College, Penmj. Reraenham and Aston, 



abundant, Stanton. Sonning meadows, Tufnail. Arborfield, 



Tayler. Coleman's Moor. Blackwater. Sandhurst. Between 



Loddon Bridge and Wokingham. Winkfield. Holyport. East- 



hampstead. Risely. Finchampstead. Near New Mill. Thatcher's 



Ford. Common about Hurst Green. Wokingham. Early. 



Wargrave. Ruscombe. Windsor. Shottesbrooke, &c. 



Var. RADiATA, Gray, Nat. Arr. ii. 448 (1Q21) = Coreopsis Bidens, Linn. 



Sp. PI. 908, is of very rare occurrence ; it occurred near Hurst in 



a pond by the roadside in 1893, ^^^d Dr. F. Arnold Lees found it in 



Oxfordshire, near Caversham, in 1882. 



Bidens minima, Huds. Fl. Angl. 310, the var. minima, S. F. Gray, 1. c, 

 is only a small state which is often found on the mai'gins of ponds 

 growing with the ordinary form. I noticed it between Hurst, Loddou 

 Bridge, and Wokingham, and near Hurst, when all gradations could 

 be traced between it and the robust plant two feet high. B. cernuo 

 varies considerably not only in height (from two inches to three feet , 

 but also in hairiness ; sometimes the stem is veryasperous (/. rugosa), 

 at others nearly smooth. 



B. cerniia does not appear to be recorded for E. Gloucestershire. 



B. tripartita, Linn. Sp. PI. 831 (1753). Bur Marigold. 



Top. Bot. 249. Syme, E. B. v. 94, t. 764. Nyman, 348. Fl. Oxf. 157. 



Native. Paludal. Marshy places, pond-sides, ditches. Frequent in 

 the north of the county, and widely distributed throughout the 

 county in low-lying situations near stagnant water. A. or B. 

 July-September. 



First record. Sonning, Mr. S. Rudge, in Herb. Brit. Mus. 1800. Pub- 

 lished in RusseWs Cat. 1839, 



1. Isis. Cumnor. Appleford. Buscot Park. Buckland. Bablock 



Hj-the. 



2. Ock. South Hinksey, Baxter, 1827. Marcham, Walkei: Uffington, 



Bellamrj. Wantage. Plentiful along the Abingdon Road beyond 

 New Hinksey. Radley. Abingdon. Kennington. Shippon. 

 Appleford. Blewbuiy. Cholsey. 



3. Pang. Tilehurst, Tufnail. Pangbourn. 



4. Kennet. Bagnor Marsh, Russell, I. c. Greenham. Theale. Kint- 



bury. Sandleford. Southcote. Mortimer. Hampstead Marshall. 

 Newbury Wash. Knight's Bridge. 



