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. Agastache breviflora: Arizona Hummingbird Mint (Popularity: ): Description and photo. Agastache aurantiaca: Orange Hummingbird Mint (Popularity: ): Description and photos of the species and several of its cultivars.