NOTES ON CAMBRIDGESHIKE PLANTS. 249 



(e.g. Germiimn rotunclifolumi and TJtricularia minor) were of great 

 interest. I gratefully thank Mr. Arthur Bennett for much help 

 rendered to me m connection with this paper and with British 

 Botany generally. Mr. Arthur Shrubhs at the University Herbarium 

 kindly gave me information about many Cambridge plants. 



In the following list any record rests on my personal observation 

 unless otherwise stated. The numbers are those of the districts of 

 the county as defined in the Flora ; an asterisk denotes that the 

 species was not recorded from that district. Records for very many 

 common plants are still wanted for the most northern district 

 (8, Wisbech) ; as it is almost entirely fen-land, the ordinary wood- 

 land species are no doubt really absent. 



Thalictrum collinmn Wallr. {T. saxatile Bab. Fl. Cambs. p. 1). 

 1. Fleam Dyke. Several places W. of the Devil's Ditch on New- 

 market Heath ; Beacon Course, &c. — T. jiaviim L. 7. Ditches by 

 road, Chatteris to Mepal. 



Anemone Pulsatilla L. 1. Fleam Dyke, plentiful. Much more 

 plentiful on that section of the Devil's Ditch included in this 

 district than on that in Dist. 5, where it occurs in limited quantity. 



liammcuhts circinatits Sibth. 5. Baitsbite. — R. trichoplujllm 

 Chaix. 2. Dernford Fen. — E. Drouetii Godr. 3. Grantchester 

 Meadows. — B. heterojjhyllus Web. ex. p. i. Milton. — R. LiiKjua L. 

 5. Ditch between Burwell and Wicken Fen, 1893. — Pi. parviflorus 

 L. 3. Still at Gamlingay in 1895; not recorded thence since 

 Relhan. 



Aqidlegia vulgaris L. 3. Edge of fallow above Harlton chalk- 

 pit, probably adventitious. 5. Chippenham Fen, plentiful and 

 apparently indigenous. Babington distrusted this as a native in 

 the recorded stations. 



Delphinium Ajacis Eeichb. 2. One plant in a cornfield between 

 Sawston and Dernford Fen; the late J. E. Gray (of King's College). 

 This, which was formerly so plentiful, is now very rarely found. It 

 still occurs near Swaffham Prior (5), where Puemeria hyhrida DC. 

 has not been seen for many years. 



Castalia speciosa Salisb. 5. Chippenham Fen. 



Fumaria densijiora DC. 5." Mr. G. C. Druce and myself found 

 this in fields between Fordham and Chippenham Fen in 1893. — 

 F. Vaillantii Loisel. 1. Still in the old locality near the entrance 

 to the Wool-street ; I did not see it elsewhere on the Gogmagogs. 

 — F. parviflora Lam. 1. By the Fleam Dyke near the old railway, 

 very fine. 5. Cornfields S.E. of Chippenham Fen. 



Nasturtium palustre DC. 1.* Coe Fen, Cambridge. 



Arabis hirsuta Scop. 5. Plentiful on the black soil of a "drove " 

 between Burwell and Wicken Fen. 



Cardamine amara L., which is recorded in Top. Bot. ed. 2, but 

 not in the Flora, was found some years ago in very small quantity 

 close to the railway bridge over the Cam at Barnwell. Recent 

 search there has been in vain. The rarity of this plant in the 

 county is quite extraordinary ; it is common in the fenland of 

 W. Suffolk, by the R. Lark. 



