PREFACE. XI 



always proposed to advert more fully, than 

 had hitherto been attempted, to the subject of 

 natural affinities, in my English Flora, so long 

 promised to the British reader, in his own 

 language, and of which 3 volumes are now 

 in his hands. A work of this kind, founded 

 on actual observation, is indeed requisite, 

 instead of the various compilations of com- 

 pilations, with which those who cannot read 

 Latin have hitherto been obliged to rest sa- 

 tisfied. Some exposition of this kind must 

 have accompanied that work, to render it in- 

 telligible ; and it will be still more commo- 

 dious for the student to become previously 

 initiated by the present compendious volume, 

 and to take a general view of the subject, be- 

 fore his attention can be directed to particu- 

 lars. 



The eighth chapter begins with an index, 

 or key, to Jussieu's Classes, and an enume- 

 ration of his Orders. In the sequel each Or- 

 der is given in it's place, with the full cha- 

 racter, translated from the Genera Vlantarum 

 of Jussieu. His descriptions and observations 

 are every where marked by inverted commas, 

 occasional corrections or remarks, intermixed 



