|Botanical Society of Britain & Ireland
||A scientific society for the study of flora, plant distribution and taxonomy relating to Great Britain, Ireland, the Channel Islands and the Isle of Man.
|The British Lichen Society
||The BLS aims to promote and advance the teaching and study of lichens and encourage and actively support the conservation of lichens and their habitats.
|British Bryological Society
||The British Bryological Society exists to promote the study of mosses and liverworts.
| Fossil Plants
||A fascinating web site about a garden run by Robbie Blackhall-Miles in North Wales that specialises in growing plants that have a fossil record of at least 60 million years.
|The Linnean Society of London
||The world’s premier society for the study and dissemination of taxonomy and natural history.
|Royal Horticultural Society
||The UK’s leading gardening charity.
||The Systematics Association is committed to furthering all aspects of systematic biology.