BARBAREA 43 



Hurst. Arborfield. Coleman's Moor. Joiildern's Ford on 

 Blackwater. Euscombe. Shottesbrooke. Windsor. Virginia 

 Water. Whistley Mill. Cookham. Old Windsor. Pcnd near 

 Cockpoll Green. 



This plant varies extremely in the shape and in the cutting of the 

 leaves. 



Several varieties have been named, the chief of which are — 



Var. iNDivisA, Beck, 1. c. Reichb. Ic. Fl. Germ, et Helv. ii. f. 4363 a. 

 Nasturtium aquaficiim, Wallr. Sched. Crit. 37T, with the leaves entire 

 and not auriculate, has been observed by myself at Appleton, Mouls- 

 ford, &c. 



Var. AUKicuLATA, Beck, I.e. Nasturfium riparium,Wa.\]r. I.e. Eeichb. 

 1. c, f. 4363)3, 'has been seen near Pangbourn. 



Var. VARiiFOLiA (DC. Syst. ii. 197. Reichb. I.e., f. 43637, under 

 Nasturtium). This form has pectinately-pinnatifid lower leaves, the 

 upper leaves being sub-entire and ex-auriculate. It occurs at Wythani, 

 Pangbourn, &c. 



In the Blackwater a lax form has been observed which rather 

 suggested a hybrid with R. palustris. 



R. amphihia occurs in all the bordering counties. 



BARBAREA, R. Br. in Alton, Hort. Kew. ed. 2, iv. 109 (1812. 



B. vulgaris, R. Br. 1. c. Winter Cress. 



Erysimum Barbarea, Linn. Sp. PI. 660 (1753V E. lyraturn, Gilib. Fl. 

 Lituan. ii. 59 (1782^ Barbarea, Gerard, 188. B. lyrafa, Asch. Fl. 

 Brand. 35. Barbaraea Barbarea. 



Top. Bot. 43. Syme, E. B. i. 171, t. 120. Nyman, 31. Fl. Oxf. 23. 

 Native. Paludal. Banks of rivers, ditches, moist places, rather 



common and generally distributed. A noticeable feature of the 



Kennet banks. B. April-July. 

 First record. Winter Cress upon ye banks of ditches everywhere about 



Oxford, MS. in Lytes Herball, 1660, Erysimum barbarea, Dr. Noehden, 



Mavor's Agr. Berks, 1809, 

 B. vulgaris is described in Syme, L c, as having 'the pods in a dense 

 raceme, generally ascending, sometimes spreading when young.' Syme 

 also says that ' a form [var. divaricata'] occurs in shady places with 

 the youvg pods arched and spreading. It has often been mistaken 

 for B. arcuata, but is apparently a state of J5. vulgaris.' Syme's typical 

 plant is the rarer form with us. 



Var. DIVARICATA, Dyer [Nomen Solum] in Britt. Contr. (1871^ where 

 it is mentioned as having been observed by Mr. W. T. Dyer by the 

 side of the Gulf stream near Oxford. 



This form, which is common by our river-banks, has the pods 



