This definition appears very rarely
In 1988 a Horticultural Taxonomy Group (Hortax)[nb 1] was formed in the UK and a parallel organisation, the Nomenclature and Registration Working Group of the Vaste Keurings Commissie in the Netherlands. One development promoting discussion was the newsletter Hortax News which was superseded in February 2006 by the first issue of Hanburyana, a journal produced by the Royal Horticultural Society in London and dedicated to horticultural taxonomy. This filled a gap left when the American journal Baileya ceased publication in the early 1990s. Another development was the launch, in 2007, at the Sixth Symposium on the Taxonomy of Cultivated Plants at Wageningen of the International Association for Cultivated Plant Taxonomy.