22 EANUNCULACEAE 



5. Loddon. Park Place. Bowsey Hill, Stanton. Near Marlow, Mill, 

 1. c. Wellington College, Bowsey Hill. Wargrave, Maidenhead 

 Thicket. Windsor Park. Cookham Dean. Swinley. Farley 

 Hill. Risely, &c. 



Var. APETALUS, Wallr. in DC. Prod. i. 34 (1824), which is probably 

 the same plant as var. depauperata, Hook. Stud. Fl. 7 1,1870), is also 

 common in suitable situations in all the districts. The more usual 

 form has one or more of the petals perfect. 



Var. iNCisiFOLius, Reichb. Ic. Fl. Germ, et Helv. iii. t. xii, f, 4599 

 (as incisifolia) . A slight variety occurs in some of the more shady 

 localities, as in Bagley Wood, Wytham, &c. 



R. auricomus, the flowers of which are of a deeper golden tint than 

 those of acris or bulbosus, is widely distributed in Berks, but is rare in 

 the higher chalk downs, and is indeed absent from a considerable 

 stretch of them, and from the dry heaths in the south of the county. 

 It occurs in all the bordering counties. 



R. sardous, Crantz. Stirp. Austr. fasc. 2. 84 (1763). 



B. secundus vet sardous, Cordus. R. hirsutus, Curt. Fl. Lond. ii. t. 40 

 (circa 1778). R. ijhilonotis, Ehrh. in Hannov. Mag. (1783) 270. 



Top. Bot. 14. Syme, E. B. i. 43, t. 36. Nyman, 14. Fl. Oxf. 7. 

 Native. Inundatal. Pond-sides. Very local and rare. A. or B. 



May-August. 

 First record. R. hirsutus. Moist clayey places. Dr. Noehden in Mavors 



Agr. Berks, 1809. 



4. Kennet. Elcot. Kintbury, Reeks, in Britt. Contr. 187 1. Stroud 



Green, Jackson. 



5. Loddon. Blackwater Lane near the Ford, and elsewhere near 



Wellington College, Penny. 



Probably Dr. Noehden 's record was a mistake for one of the other 

 species. Either this plant has decreased in the Midlands, or, what is 

 more probable, the localities given for it in the older floras were 

 often erroneous. The plant recorded as R. hirsutus by Mr. A. Beesley 

 from Banbury in Fl. Oxf. I find is represented in his herbarium by 

 a specimen of the upright hairy form of R. repens. 



R. sardous occurs, in Hampshire, Wiltshire, and Surrey. If it ever 

 occurred in Oxfordshire it is now probably extinct. 



In Beck's Flora Nieder-Osterreich^ i. 421 (1892), the British plant is made 

 var. hirsutus (Curtis) of R. sardous. Beck considers R. sardous to be identical 

 with R. pseudo-bidbosus, Schur, which differs from our British plant in 

 having the tubercles on the achenes nearly or quite obsolete. If the Sar- 

 dinian plant is identical with ours, it would appear that its nam.e accord- 

 ing to strict priority should be R. parvulus, Linn. var. sardous (Crantz). 



K. parviflorus, Linn. Syst. ed. 10, 1087 (1758^ 



R, hirsutus annuusfoliis Geranii Columbini, Merrett's Pinax, 102 (1666;. 



