EUPHOEBIACE^E. CEEATOPHTLLACE^. 209 



Carton; Toft; Eltisley; Croxton; N. — 4. Madingley. 

 Dry Drayton. Both the Pap-worths ; Graveley; Elsworth; 

 N. — 5. Chippenham. Horningsey. TTpware. Newmarket. 

 Bottisham; H. 



Meecueialis Linn. 



1. M. perennis Linn. Dog's Mercury. 



Cynocram.be mas et famina, B. C. 43. M. perennis 

 repens Gynocrambe dicta, M. M. 11. M. perennis, M. PI. 22. 

 Belh. 410. 



Woods and thickets. P. April, May. 



1. Back lane, Hinton. Wood Ditton. Dullingham. 

 Deersley's Wood, Newmarket. Burrough-Green. Brinkley. 

 Shudy Camps. — 3. Cambridge. Kingston and Hardwick 

 Woods. Croydon. Arrington. Gamlingay. HayleyWood; 

 Caxton; Eversden; Wimpole; Eltisley; N. — 4. Madingley 

 Wood. 



2. M. annua Linn. French Mercury. 



M. mas et fmmina, B. C. App. ii. 12. M. M. 11. M. 

 annua, M. PL 22. Eelh. 410. 



Cultivated ground. A. August, September. 



6. Ely. — Dent and J. Martyn say that this plant was 

 frequent as a weed. Now it is very rare. 



CERATOPHYLLACEM 



Cekatophylltjm Linn. 



1. C. demersum Linn. Eomwort. 



Equisetum palustre ramosum aquis immersum, B. C. 49. 

 Dichotophyllwm, M. M. 12. G. demersum, M. PL 21. Belh. 

 392. 



Ponds and ditches. P. June, July. 



18—3 



