lxxii INTRODUCTION. 
As a general rule, only the last year in which a plant has 
been seen in any station is given, in cases of interest, however, 
where a plant has been under observation in a locality for a 
number of years, the first and last of these years are usually 
given ; this does not imply that these two were the only years 
in which it was observed, nor does it imply that the plant 
ceased to exist there on the date last given. 
When referring to well known botanists, all prefixes and 
initials are as a rule omitted ; in the case of the present writer 
the initials R.W.S. have alone been used. 
The question whether non-established alien plants, casuals, 
errors, &c., should be included in the text or consigned to a 
separate appendix, has, after some doubt, been decided in 
favour of inclusion in the text. Whatever may be the defects 
of this method, it possesses the great advantage of exhibiting 
every plant in its proper sequence and of sparing the reader 
the inconvenience of consulting what is practically a double 
flora. These plants are distinguished from those considered 
fully established, by being inclosed in square brackets and 
not displayed in separate lines or paragraphs. 
Records of Casuals noted for one year only have been 
omitted unless some special interest warrants their inclusion. 
