INTRODUCTION. XI 



are given in Turner and Dillwyn's Botanists Guide; de- 

 rived chiefly, if not wholly, from Relhan's Flora. It was 

 published in 1805. 



In 1829 Prof. Henslow published a Catalogue of British 

 Plants, in which he marked, by printing their names in 

 Italics, the species "not found in Cambridgeshire;" and 

 in 1835 he issued a second edition of the Catalogue, 

 where the letter "c'' is appended to the names of all 

 the plants "included in the Flora of Cambridgeshire." 



In the first volume of the New Botanist's Guide, also 

 dated 1835, Mr H. C. Watson gave a list of localities for 

 plants found in this county, mostly taken from Relhan's 

 Flora, but with a few additions. In the second volume 

 of the Guide, dated 1837, he added a rather long supplement 

 to this list, derived chiefly from notes supplied to him by 

 the Rev. W. H. Coleman. 



Since that year only a few localities of Cambridgeshire 

 plants have been announced in the various periodical and 

 other publications devoted to Botany. Amongst them must 

 especially be noticed Mr G. S. Gibsons "Flora of the 

 neighbourhood of Saffron Walden.'' It is to be found in the 

 first volume of the Phytologist (pages 408, 838, and 1123), 

 and contains many plants of Cambridgeshire. 



It is proper in the study of a Flora which is so much 

 mixed up with the History of Botany in England to en- 

 deavour to trace each plant to the person by whom it was 

 first noticed or recorded. Accordingly a reference will be 

 found under each species to the earliest writer who mentions 

 it as a native of our county, and when possible the name of 

 the original finder of it is stated. Also it seems highly 

 desirable to record not merely the present state of our Flora 



