Self-incompatibility is the system that inhibits pollen germination and pollen tube growth by self-pollen. This trait is important for the breeding ofBrassicaandRaphanusspecies. In these species, self-incompatibility is governed by theSlocus, which contains three linked genes (a set called theShaplotype), i.e.,S-locus receptor kinase,S-locus cysteine-rich protein/S-locus protein 11, andS-locus glycoprotein. A large number ofShaplotypes have been identified inBrassica oleracea,B. rapa, andRaphanus sativusto date, and the nucleotide sequences of their many alleles have also been registered. In this state, it is important to avoid confusion betweenShaplotypes, i.e., an identicalShaplotype with different names and a differentShaplotype with an identicalShaplotype number. To mitigate this issue, we herein constructed a list ofShaplotypes that are easily accessible to the latest nucleotide sequences ofS-haplotype genes, together with revisions to and an update ofShaplotype information. Furthermore, the histories of theS-haplotype collection in the three species are reviewed, the importance of the collection ofShaplotypes as a genetic resource is discussed, and the management of information onShaplotypes is proposed.