PREFACE. iK 
Buttrard, Hepwice, Dickson, Retztvs, Secvrer, 
Horrman, the Flora Rossica, the Flora Danica, the 
Flora Londinensis, and the ‘Transactions of the Lin- 
nean Society; besides many from other writers, 
before omitted, and from the following Books not 
before noticed, viz. Auuiont Mora Pedemontana, 
Horrmay’s Historia Salicum, Kniexorr’s Coloured 
- Impressions, Smirn’s and SowERBY’S characteristic 
figures, Statkuouse and Vetiey on Marine Plants, 
and Woopvitie’s Medical Botany, SWAxNE’s Gra- 
mina pascua and Diexson’s Fusciculi of dried plants 
are also referred to. Se eee roo 
(seg eae 
pets fee 
. derable changes have been made in the Terms, by 
a nearer approach to the Linnean language; but 
in this point the Author rather willingly follows 
than presumptuously attempts to lead the public. 
taste ; and as the Explanatory Dictionary of terms 
is much enlarged and improved, he hopes that no 
person will have cause to regret the change. 
_-) The classes Gynandria, Monoecia, Dioecia, 
and Polygamia are now incorporated with the other’ 
Classes; that is, the plants they contained are 
distributed, each in its proper class, according to 
the number of Stamens. This alteration in the 
System has not been made without the approbation 
_ of Professor Tuunzene, the worthy suceessor of the 
great Linnzus; and it meets the concurrence of 
most of the first botanists of the age. 
