PREFACE xiii 



suggestions both as to the subject matter of this work and as 

 to ways, means, and mechanism for estabhshing authoritative 

 plant-name identification and registration. 



Horticultural Variety Na7nes Should be Registered. It is the 

 hope of the Committee that ultimately all horticultural hybrids 

 and other horticultural varieties may be known by individual 

 non-Latinized names, registered in connection with type specimens, 

 illustrations, and descriptions of each variety, and, so far as possible, 

 free from duplication of varietal names within the same genus, or 

 even within closely related genera. This seems a remote ideal to- 

 day, but its influence on the present publication is shown in 

 many genera where horticultural varieties known both by 

 Latinized polynomials and by vernacular names have been listed 

 in suitable groups under the latter, with the Latinized names given 

 only as synonyms. 



Mechanism Needed for Name Registration and Identification. 

 The American Joint Committee urges as a first step that there be 

 established in suitable locations in the different geographical regions 

 and climatic zones of the United States, Government botanical 

 gardens, arboreta, and test-gardens, with herbaria attached, where 

 all varieties of horticultural and agricultural plant material may, 

 so far as possible, be grown and accurately labeled in the field, 

 and be accompanied by corresponding herbarium specimens of 

 flower, fruit, and plant, and with accurate descriptions and photo- 

 graphs. 



Nomenclature Code. The adoption by the American Joint Com- 

 mittee of a Code for use in the future naming of new horticultural 

 varieties according to standardized rules and procedure, obviously 

 is of the greatest importance in relation to simphfied and definite 

 horticultural terminology. Such a Code should be based on the 

 principles adopted and practiced by the American Joint Commit- 

 tee in preparing Standardized Plant Names. The American Joint 

 Committee may prepare and issue such a Nomenclature Code. 



Names as Published in Standardized Plant Names are Declared 

 Standard for Not Less Than a Five-Year Period. The American 

 Joint Committee hereby adopts as standard, by authority of its 

 constituent organizations, the scientific and common names as 

 pubhshed in this 1923 edition of Standardized Plant Names for 

 a period of not less than five years. 



Reprints may be made as necessary, but the only permissible 



