INTRODUCTION. 
IX 
boundaries of Cheshire and Flintshire were fixed, therefore 
the fat alluvial plain, appropriately known as “The Sealands,” 
and which extends from near Burton Point to near Chester; 
and which lies between the present bed and the ancient bank 
of the Dee, is really in Flintshire, although on the Cheshire 
side of the river. 
Total area about 500 square miles. Coast line about 
80 miles. 
Casuals. — There is probably no district in the kingdom 
which is so rich in casual plants of both British and foreign 
origin as ours, owing to the immense over-sea traffic to the 
port of Liverpool. 
When ships arrive in ballast, their contents are deposited 
about the docks, and thus many species find a home, very 
temporary in most cases, but some show signs of becoming 
naturalised, as they recur in most years about the docks on 
both sides of the Mersey, and the canal banks, especially 
about Aintree. 
When recording casuals and the rarer species, dates 
should always be given. In the present work this has been 
done whenever possible. 
The arrangement of the orders, genera and species is that 
of the 8th edition of the London Catalogue of British Plants, 
1890. This edition was followed by the Flora Committee of 
1893, and the present editor has not altered the nomenclature 
so as to harmonise with the later edition on account of the 
too numerous alterations and unfamiliar terms therein em- 
ployed, except in a few instances. 
The following terms are employed to indicate the claim 
each species has to a place on our list, viz. : — 
Native, indigenous to the “ Liverpool District.” 
Colonist, a plant indigenous to Britain, but not native in 
this district. 
