No. 3 and its first two supplements were published electronically as pdfs distributed as email attachments, so not effectively published (see Melbourne Code Art. 29.2). The printed papers were distributed to Kew and Monaco on 28 Nov 2012, the effective publication date.; available online from 2014 - for dates of publication use the date on which the pdfs were uploaded to the website http://www.cactus-mall.com/cactology/