16 FLORA OF CAMBRIDGESHIRE. 



3. On old wall at Castle End, Cambridge; W. H. C.— 6. Ely. 

 —8. Wisbech; J. B. 



Nasturtium R. Br. 



1. N. Officinale B. Br. Wafer Cress. 



i\T. aquaticum officinarum, B. C. 103. M. M. 80. Sisym- 

 brium Nasturtium, M. PL 15. Belli. 265. 



In running water, common. P. June, July. 



Found in all the districts, but seems to be least plentiful 

 in the Fens. 



2. N. sylvestre B. Br. 



Eruca aquatica, B. C. 50. Radicula aquatica foliis in 

 profundas lacinias dimisis, M. M. 81. Sisymbrium sylvestre, 

 M. PL 15. Belh. 266. 



River-banks and wet places. P. June to August. 



1. By the river below Barnwell and opposite to Chester- 

 ton. Dullingham. Stetchworth. — i. By the river below 

 Waterbeach. Cottenham. By the river Ouse near Fen 

 Drayton and by ditches there. — 5. By the river below Clay- 

 hythe, especially at Bottisham Lock. Beche Lode. Horn- 

 ingsey. — 6. Ely. — 7. Doddington. Chatteris. — 8. Wisbech; 

 A. P. 



3. N. paliistre Cand. 



N. terrestre. Belh. ed. 1. App. i. 14; ed. iii. 266. 

 Wet places, rare. P. June to September. 



2. In the village of Hauxton; Belh. — 4. By the river 

 at Clayhythe and Ditton. Quarry at Upware. — 6. Ely- 

 Haddenham. Witchford. 



Barbara B. Br. 



1. B. Vulgaris B. Br. Yellow Rochet. 



Barbarea, B. C. 19. M. M. 79. Erysimum Barbarea, 

 M. PL 15. Belh. 268. 



