• Dictionary of Botanical Epithets
• Flora North America Categorical Glossary
• Glossary of Botanical Terms
• Glossary of Roots of Botanical Names
• Hillier Gardens Plant Records Database
• International Plant Names Index
• National Gardening Association Plant Name Search
• Oak Names Database A checklist of cultivar and Group names prepared by Piers Trehane
• USDA Plant Database

Last Updated 5/17/2007

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