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INTRODUCTION TO VOLUME II 



YOLUME II. of the Bradley Bibliography is intended to contain the titles of all publications 

 relating to families, genera and species of woody plants; it is intended to contain also 

 references to descriptions, notes and illustrations of woody plants contained in articles 

 published in periodicals and serials, and in smaller pubhcations or in books dealing with subjects 

 foreign to taxonomy where they are often apt to be overlooked. No attempt, however, has been 

 made to excerpt references in monographs of Families and Genera the titles of which appear 

 in this volume, and in Floras and similar comprehensive works the titles of which are found in 

 volume i. 



For practical reasons it has been deemed advisable not always to enumerate the plants under the 

 names used in the publication cited, but to group them under the name which is now considered 

 valid. Thus all articles on Picea excelsa, Picea Abies and Pinus Abies wiU be found under Picea 

 Abies, all articles on Cydonia japonica, Pyrus japonica and Chaenomeles japonica under the last 

 name, and all articles on Caesalpiniaceae, Papilionaceae and Mimosaceae under Leguminosae. 



The nomenclature generally is that adopted by the Vienna Botanical Congress of 1905, but m 

 those instances where the existing binomial imder the proper genus did not conform to the rules 

 of the Vienna code, it has nevertheless been used, as the making of new combinations has been 

 strictly avoided ; or where no combination at all existed the reference will be found under the adopted 

 generic name or genus, as for example Dammara celebica will be found among the general references 

 to the genus Agathis, of which Dammara is a synonym. 



The conception of the genera agrees generally with Engler & Prantl's Die Naturlichen Pflanzen- 

 familien, but in several instances a more recent monographic treatment has been followed. In a 

 bibliographic compilation like this it has not, of course, been possible to make a detailed study of 

 each group, and in referring the species to their proper genera use has been made of the Index 

 Kewensis and other nomenclators and general works, although whenever good monographs of a 

 family or genus exist, they have been followed in preference to the Index Kewensis. As the niunber 

 of good and recent monographs including all the species of a genus known up to the end of 1900 is 

 not large, errors and inaccuracies are unavoidable. 



The quotations of authors for the adopted names of plants have been omitted, as this is not a 

 taxonomic work and the names are to be considered simply as a part of the bibliographical classi- 

 fication. The dates given for the references from periodicals and larger works refer to the date of 

 the title-page of the volume, but in case the volumes were pubhshed in parts of different dates the 

 date of the part is often added in brackets. 



In the arrangement of the famiUes the system of Engler & Prantl has been followed with the 

 corrections as they appear in Dalla Torre & Harms' Genera Siphonogamarum and in the sixth edition 

 of Engler's S^jllabus. 



Additional references to genera and species dealing with them chiefly from a horticultural and 

 economic point of view wiU appear in volmne iii., and references to works dealing with them 

 from a silvicultural point of view m volume iv. Horticultural articles often contain important 

 taxonomic matter, while economic and particularly pharmaceutical literature contains often 

 valuable information about the anatomical structure and the chemistry of plant products. 



