International Checklist of Cultivated Ilex 



Part 2, Ilex crenata Thunberg ex J.A. Murray 



T.R. Dudley and G.K. Eisenbeiss 



Introduction 



In 1953, the Holly Society of America, Inc., published Bulletin No. 6, 

 "Preliminary Holly Check List," by Wister et al. At that time it was the 

 most comprehensive checklist of cultivated Ilex, although the authors 

 were aware that revision and updating would be necessary. In 1958, the 

 Society was appointed the "International Registration Authority" for 

 cultivar names in the genus Ilex. In accordance with its mandate to 

 produce new and updated checklists and registers, the Society, with the 

 cooperation of the U.S. National Arboretum, began compiling the 

 "International Checklist of Cultivated Ilex." When completed in its 

 entirety of several parts, the checklist will include all names in cultivated 

 Ilex, with explanations of their legitimacy and synonymy, and with 

 descriptions, sex determinations, origins, sources, and occasionally, 

 hardiness ratings. "Part 1, Ilex opaca" has already been published 

 (Eisenbeiss and Dudley 1973). 



The present publication, part 2, presents 548 entries for Ilex crenata. The 

 cultivars originally came from many different areas of the world, and 

 some are described in the English language for the first time. Although 

 this checklist is primarily based on literature resources, authentic living 

 and herbarium materials were examined extensively when available. 



The nomenclature in part 2 agrees with the "International Code of 

 Nomenclature for Cultivated Plants — 1980" (Brickell et al. 1980), also 

 known as the "Cultivated Code," and with the "International Code of 

 Botanical Nomenclature" (Greuter et al. 1988). Common names have been 

 excluded to avoid nomenclatural confusion. The need for common names 

 is questionable when cultivar names are available. There are no accepted 

 national or international rules, guidelines, or codes governing origin, 

 precedence, formulation or usage of common or colloquial names in 

 horticultural plants. 



Research botanist and horticulturist, respectively, U.S. Department of Agriculture, 

 Agricultural Research Service, U.S. National Arboretum, 3501 New York Avenue, NE., 

 Washington, DC 20002. 



