PREFACE. 
of Yorkshire, in addition to the valuable co-operation above specially 
referred to, the Author is indebted to the following Botanists. 
Mr. J. Ward. — List of Plants in the vicinity of Richmond. 
Mr. J. Sanderson. — Another from the same district. 
Mr. Joseph Fryer, of Swinton. — List of the Plants of Mashamshire. 
Mr. J. Tatham, jun. — List of the Plants in the rich district round 
Settle. 
Mr. Benjamin Thompson. — Notices relating to the same district. 
Rev. J. S. Howson. — List of the Plants near Giggleswick. 
Mr. H. Denny. — List of the Plants in the Leeds district. 
Mr. J'. Nowell, of Todmorden, a most indefatigable and accurate 
Cryptogamic Botanist, much valuable information on the Mosses. 
Rev. R. Bunch, Emanuel College, Cambridge. — List of Plants near 
Wakefield. 
Rev. B. Eamonson. — List of Plants near Bramham. 
Mr. Fuller. — List from the same district. 
Rev. W. Gray. — List of Plants near BrafFerton. 
Late Dr. Wasse. — List of Plants near Thirsk. 
Thos. Thornbourn, Esq. — List of Plants near Kirby Moorside. 
Mr. R. Spruce. — List of Plants near Ganthorpe and Castle Howard. 
Mr. David Smith. — List of Plants near Hull. 
Mr. Lovell Squires. — List of Plants growing near York. 
Mr. Oswald Allen Moore has contributed to complete the Lists for 
the vicinity of Doncaster, York, and other districts ; Mr. Giles Munby, 
Mr. Allis, and Mr. John Williamson, of Scarborough, have furnished 
information regarding several interesting plants and particular localities. 
Mr. R. Marnock. — List of Plants near Sheffield. 
Mr. Ibbetson, Schoolmaster, Drumington. — Various localities. 
From all these various sources, the Catalogue has been constructed. 
The Author is, however, by no means desirous that it should be received 
by the readers as complete. Several considerable districts appear as yet 
