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Missouri Botanic Garden’s TROPICOS Databases

“All of the nomenclatural, bibliographic, and specimen data accumulated in MBG’s electronic databases during the past 25 years are publicly available here. This system has over 1.2 million scientific names and 4.0 million specimen records.”

International Plant Names Index

“The International Plant Names Index (IPNI) is a database of the names and associated basic bibliographical details of all seed plants. Its goal is to eliminate the need for repeated reference to primary sources for basic bibliographic information about plant names. The data are freely available and are gradually being standardized and checked.”

Gymnosperm Database

“The Database provides basic information on the classification, description, ecology and uses for all species and higher-ranked taxa of the gymnosperms, i.e., conifers, cycads, and their allies. You enter the taxonomic tree at the Family level and then navigate to the Genus, Species or sometimes Variety levels. At each level, information on the taxon at hand is provided, along with bibliographic citations that will take you to more detailed information about the taxon.”