Institute of Plant Physiology at the Bulgarian Acadamy of Sciences
Acad. M. Popov Institute of Plant Physiology of the Bulgarian Academy of Sciences is a research centre for plant physiology and biochemistry in Bulgaria. The main research areas are plant growth and development, regulation of photosynthesis, plant mineral nutrition and plant water relations, and regulation of plant metabolism and gene expression.
http://www.bio21.bas.bg/ipp/

Australian Plant Name Index
Searchable database from the Centre for Plant Biodiversity Research.
http://www.anbg.gov.au/cpbr/databases/apni.html

Marks Hall Gardens and Arboretum
The Gardens and Arboretum located in Essex, feature landscaped woodland walks and footpaths, with vistas across the lakes to the Millennium Walk and the 18th Century Walled Gar
http://www.markshall.org.uk/

Centre for Innovation and Development in Plant Health
Center at the University of Girona dedicated to research, technology transfer, training and consulting in detection, identification and control of plant pathogens.
http://intea.udg.es/cidsav/eng/index.htm

The Centre for Plant Conservation Genetics
,
http://www.scu.edu.au/research/cpcg/

Kintaline Farm Plant and Poultry Centre
Welcome to our farm where we rear traditional breeds of hens and ducks for sale and are developing a visitor attraction with the birds. We also have a garden plant centre and grow fresh vegetables. There is also a garden railway, and Model and Vintage Transport show once a year.
http://www.sol.co.uk/k/kintaline/

University of British Columbia Botanical Garden and Centre for Plant Research
UBC Botanical Garden and Centre for Plant Research is located in Vancouver, British Columbia, Canada.
http://www.ubcbotanicalgarden.org

CGIAR Agricultural Biodiversity Centre
Bioversity International, formerly IPGRI, the International Plant Genetic Resources Institute, is the CGIAR international agricultural research centre mandated to work on the conservation and sustainable use of agricultural biodiversity. Website covers all practical and policy aspects - many downloadable publications.
http://www.bioversityinternational.org

University of Westminster
University of Westminster - School of Informatics
http://www.wmin.ac.uk/cscs/

(Australia) Centre for Plant Architecture Informatics
A collaborative venture between CSIRO and the University of Queensland. Projects, people, events, software, links.
http://www.cpai.uq.edu.au/