BRITTEN : FLORA OF HIGH WYCOMBE. 349 



t P. duhimi, L. Bab. 15. Prol)aMy not unfrequent ; I have identified it 



in two or three localities, 

 t P. Lecoqii, Lamot. Bab. 15. Cornfields and banks, frequent. 

 J P. somniferum, L. White Poppy. Bab. 1 6. By the railway at the foot 



of Castle Hill, and in other places ; Mr. T. P. Lucas. 



Chelidonium. Linn. Celandine, 

 t C. majus, L. Bab. 16. Hedgebanks, common, bnt nearly always near 



houses. Loudwater, Hughenden, Booker, Marlov/, etc. Particularly 



fine in the railv/ay cutting near Castle Hill. 



Note — Five-petalled varieties are not uncommon. In one specimen observed, the 

 blossom bore considerable resemblance to a Viola, tlie two upper petals being large, 

 and the three lower, smaller. 



Order Y.— FUMARIACE^. 

 CoRYDALis. De Cand. 

 X C. lutea, DC. Yellow Fumitory. Bab. 17. Abundant on old walls and 

 on the bridge over the Wick, in Chapel Lane, near West Wycombe ; 

 abundant by the same river at Fryer's Mill, nearer Wycombe. 



FuMARiA. Liim. Fumitory. 

 F. pcdlidijlora, Jord. /5. Boroei, Jord. Bab. 17. This appears to be our 

 common Fumaria ; it varies greatly in size and luxuriance. Cornfields, 

 etc., 



F. officinalis, L. Bab. 18. Cornfields and waste ground. 



Order YL— CRUCIFER^. 

 ISTasturtium. R. Br. 

 N. officinale, R. Br. Water Cress. Bab. 22. Ditch in Wycombe Rye ; 



near Little Marlow ; and by the Thames ; not very common in a wild 



state, though very extensively cultivated round Wycombe, whether 



originally wild it would be difficult to say. 

 N. sylvestre, R. Br. Bab. 23. Frequent by the Thames. 

 N. jpalustre, DC. Bab. 23. Lane End Common; on banks and wet ground, 



Great Marlow, Mr. J. C. Melvill ; I have not observed it about 



Wycombe. 



Barbarba. jr. Br. Winter Cress. 

 B. vulgaris, R.Br. Bab. 23. Damp waste ground and by streams. 



TuRRiTis. Zinn. Tower Cress. 

 T. glabra, L. Bab. 24. ^' In a copjDice at the top of Cookham Down 

 (Berks), extremely plentiful." Phyt. i. 984, O.S. 



