Basidiomycetes belong to the fungi phylum, and include most mushrooms, shelf fungi, and puffballs. They are known as club fungi, and make up almost one-third of the identified species of fungi. Around 25,000 basidiomycetes have been identified, making it the most common type of fungi. Although the fruiting body of basidiomycetes are mainly visible, they mainly consist of mycelium. Basidiomycetes reproduce asexually, and occasionally sexually when hyphae are compatible. Like most mushrooms, the mushroom in the picture just above the ID is poisonous, and belong to basidiomycetes.