PKEFACE. 
The Botanical riches of Yorkshire are little known to the public at 
large ; though not a few scientific and many practical botanists have 
diligently explored almost every part of the district. The general 
Catalogues of British Plants omit all notice of many of the rare species 
found in this county, and it is difficult to gather from the published 
Lists of Local Floras a satisfactory view of the distribution of even the 
most remarkable flowers. 
In addition to these considerations, the circumstance that the Author 
has resided all his life in Yorkshire, and prosecuted botanical researches 
in it for nearly thirty years, may be thought a sufficient apology for his 
entering on a task which could only be properly performed by a resident 
Botanist, with the assistance of kind and diligent friends. That 
assistance has been so promptly and perseveringly afforded, by persons 
of eminent Botanical knowledge, that the Author would be at a loss to 
acknowledge in suitable terms the great favours he has received, did he 
not perfectly know that the pleasure of contributing to complete a 
Catalogue of Yorkshire Plants, by whomsoever begun, will be esteemed 
by these friends of science the best and most gratifying reward. 
