666 CATALOGUES. 



respective counties or other areas. During the two score years 

 many changes have been made in the species accepted and 

 described in our technical books. Some newly detected plants 

 have been brought into our descriptive Floras ; and those not 

 also local rarities ; for instance, Sagina ciliata and Ranunculus 

 Lenormandi. A much greater number, formerly deemed varieties 

 and little noticed as such, have been allowed to gain specific 

 rank ; for instance, Filayo apiculata and spathulata. 



The total number of plants which would come under these 

 categories is by no means scanty. As they have been gradually 

 increasing in their numbers during the two score years referred 

 to, it follows that the earlier the date of a, catalogue, the less 

 likely on the whole to shew some of these plants, even although 

 found in the area to which it related. It is partly on this 

 account that the form of the cited Catalogue has been men- 

 tioned, and the particular edition of the London Catalogue that 

 was converted into a Local List. Most of them being undated 

 otherwise, and the exact years of marking them not having been 

 kept in recollection, the form or the edition is thus substituted 

 as an approxim'ete date instead. 



The earliest printed lists were alphabetically arranged copies 

 of the names of plants, taken from Hooker's British Flora. The 

 first Catalogue was made out from the first edition of the British 

 Flora. A second Catalogue, still alphabetical, was taken from 

 the second edition of the same Flora. Then came a Catalogue, 

 by Mr. George Francis, arranged on the Linnean System of 

 classification, and taken from the third edition of the same 

 British Flora, which bears date in 1835. Dr. Godfrey Howitt's 

 Catalogue of Derbyshire Plants is made out by marking a copy of 

 this Linnean Catalogue. 



The Botanical Society of Edinburgh has printed several 

 Catalogues, or editions in different forms of arrangement. Up 

 to 1841, or later, it adhered to the alphabetical form. But at 

 some after date a change was made to a sort of mongrel com- 

 promise between alphabetical and systematic classification, the 



