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Introduction to the Green Kingdom (Popularity: ): Brief introduction to the plant kingdom with links to further information.
Names in Current Use for Extant Plant Genera (Popularity: ): International Association for Plant Taxonomy searchable database.
Natural Perspective: Plant Kingdom (Popularity: ): Introduction to the Plant Kingdom with information on some of the divisions which make up this group.
CalFlora Database (Popularity: ): Searchable database all 8375 currently recognized vascular plants in California, including 20000 photographs.
The Oldest Land Plants (Popularity: ): Introduction to the first land plants, known from fossils.
FloraBase - The Flora of Western Australia (Popularity: ): Authoritative scientific information on 12,000 taxa in Western Australia, including maps, images, descriptions, specimen, and nomenclatural information. Requires registration.
Botanical Word Meanings and Name Derivations (Popularity: ): References on California plant names, meanings and derivations from Latin and Greek roots, with biographical information on western botanists and collectors.
Land Plants Online (Popularity: ): Southern Illinois University's guide to the taxonomic and evolutionary relations among terrestrial plants, with extensive links to other resources.
Forestry Images - Plants (Popularity: ): Small collection of plant imagery, from University of Georgia.
Dictionary of Botanical Epithets (Popularity: ): Glossary of Latin terms used in species names, from abbreviatulus to yunnanensis.
Pteris vittata L. (Popularity: ): Includes taxonomic information, mapped distribution in Florida, and photographic image.
Pteris vittata (Popularity: ): CalFlora occurrence database query results. Distribution in California, United States.