PREFACE vii 



Those who wish to make a further study of the 

 orders or subjects discussed are referred to the 

 appendices to each volume, where bibliographies 

 will be found. 



The * Dictionary of Plant Names* has been utilized 

 in the citation of the English names, and where 

 helpful other works mentioned in the bibliography 

 have been laid under contribution, my thanks being 

 tendered to the respective authors for the assistance 

 thus rendered. 



It is hoped that the notes in Appendix II will 

 prove useful to those who wish to undertake practical 

 work, which is as essential to success in this as in 

 other fields. 



A further feature is the synopsis of orders, genera, 

 etc., following Engler and Prantl, and based partly 

 upon Dr. Carter's summary, with amendments by Dr. 

 C. E. Moss, whose new 'British Flora' is modelled 

 on the same lines. 



A. R. HORWOOD. 



Leicester Museum. 



