1.
The 2000 IUCN Red List of Threatened Species
The 2000 IUCN Red List provides taxonomic, conservation status and distribution information on taxa. The main purpose of the IUCN Red List is to catalogue and highlight those taxa that are facing a higher risk of global extinction and include them in this searchable database.
2. Agricola
The National Agricultural Library's (NAL) Web Gateway to AGRICOLA (AGRICultural OnLine Access).
3. Internet Directory for Botany
The Internet Directory of Botany is an index to botanical information available on the Internet compiled by scholars from premier institutions of botanical studies.
4. LuEsther T. Mertz Library
The New York Botanical Garden's library is one of the world's largest and most active botanical/horticultural libraries. Search Catalpa, their online catalog, or get information on their collections including botanical art, nursery and seed catalogs, Index Seminum, taxonomic literature and data files, and their extensive archives including the Lord and Burnham Collection of architectural drawings.
5. Systematic Botany and Mycology Laboratory
The U.S. Department of Agriculture's Agricultural Research Service page with databases, information on research activities, and links to professional journals.
