The collection has over 119,700 germplasm accessions assembled from 144 countries. Characterized accessions and mutant lines of "A. thaliana" serve as experimental material in laboratory studies. The herbarium collection had grown to 53,600 accessions. New Citrus chloroplast haplotypes revealed by molecular markers using Algerian and Spanish accessions. Among regions in China, accessions varied within regions, indicating extensive gene mixing. With 187 accessions evaluated with 18 morphological descriptors, 108 morphotypes or groups have been identified. Some accessions were found to succumb to Fusarium wilt. Approximately 500 accessions are processed annually. The small size of some accessions makes it convenient for cultivation in a small space. Later, the best tested accessions are crossed, mixed, and multiplied under replicable situations. In subsequent decades, there were new accessions and mergers. Additional festivals and games celebrated Imperial accessions and anniversaries. Several mature trees survive in Brighton (see Accessions). There are currently 2,480 different "accessions" growing in the garden. At last, these improved accessions are supplied to the producers.