With all of the advances in DNA identification, many of the previously known Latin names of the binomial system are going through many reclassifications. Understandably this causes some irritation to those of us who use the Latin names of plants, and there’s been some really thought provoking discussions on Latin vs. Common Names for plants on a number of great blogs.
A number of bloggers have expressed the concern that their printed reference material was fast being rendered useless, and that information on the ‘net wasn’t always accurate, and yearned for a single definitive site.
The most accurate general site I’m aware of – often used by the industry to keep a track of nomenclature changes – is http://www.theplantlist.org/ This is a collaboration between Kew & Missouri Botanic Gardens.
It isn’t going to be 100% accurate as it is still a static site, but it was completely updated as at September 2013, so is as comprehensive a reference for the most up-to-date binomial nomenclature for most species in the world that I’m aware of.
Hope this is useful – I would be really keen to hear if anyone knows of any other sites (even if it is just local, for instance, the Royal Botanic Gardens in Sydney have the Plant Net database for NSW flora : http://plantnet.rbgsyd.nsw.gov.au/)
Anyway, if anyone has any sites that they use, it would be great to know about them!