The Division Basidiomycota is a large taxon within the Kingdom Fungi that includes those species that produce spores in a club-shaped structure called a basidium. Essentially the sibling group of the Ascomycota, it contains some 22,300 distinct species (37% of the described fungi). The Basidiomycota was traditionally divided into Homobasidiomycetes (the true mushrooms); and Heterobasidiomycetes (the rusts and smuts). The Basidiomycota is now thought to comprise three major clades, the Hymenomycotina (Hymenomycetes; mushrooms), the Ustilaginomycotina (Ustilaginomycetes; true smut fungi), and the Teliomycotina (Urediniomycetes; rusts).
Basidiomycota include both unicellular (some yeasts) and multicellular forms and sexual and asexual species. They occur in terrestrial and aquatic environments (including the marine environment) and can be characterized by bearing sexual spores on basidia, having a long-lived dikaryon, and usually showing clamp connections.

Basidiomycetes - A clearing house for research information about the basidiomycete fungi. Includes a list of laboratories focused on the basidiomycota, lists of basidiomycete species, conferences and other events, and an index of available genomic information.
Meta Description: [ This site is a clearing house for research information about the basidiomycete fungi. It includes a list of scientific research laboratories focused on the basidiomycota, lists of basidiomycete species, conferences and other events, and an index of the genomic information available about these or... ]
Basidiomycetes of the Greater Antilles - Highlights research on the basidiomycetes of Puerto Rico, the Dominican Republic, and Jamaica. Includes information on the range of habitats in this area and an illustrated species list.
Dimorphic Basidiomycetes - Information about the systematics, ecology, and evolution of basidiomycetous fungi having a yeast stage.
Macrofungi of Costa Rica - Images and keys for agarics and boletes found in the regions of Costa Rica that have been explored by the authors, with particular attention to Amanita. Several images of common as well as unusual and apparently new species.
Mushrooms of Tennessee - Small photo gallery.
Natural Perspective: Order Agaricales - General description (with photos) of this order of mushrooms, including the Amanita, Agaricus, Russula, Tricholoma, Gomphidius, Coprinus, Waxy Cap (Hygrophoracea), and Bolete families.
Subphylum Basidiomycotina - Illustrated account of the Basidiomycetes.
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