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Basidiomycota (/ b ə ˌ s ɪ d i. oʊ m aɪ ˈ k oʊ t ə /) [2] is one of two large divisions that, together with the Ascomycota, constitute the subkingdom Dikarya (often referred to as the "higher fungi") within the kingdom Fungi. Members are known as basidiomycetes. [3]
The presence of basidia is one of the main characteristic features of the group. These bodies are also called tertiary mycelia, which are highly coiled versions of secondary mycelia. A basidium usually bears four sexual spores called basidiospores. Occasionally the number may be two or even eight.
All basidiocarps serve as the structure on which the hymenium is produced. Basidia are found on the surface of the hymenium, and the basidia ultimately produce spores. In its simplest form, a basidiocarp consists of an undifferentiated fruiting structure with a hymenium on the surface; such a structure is characteristic of many simple jelly and club fungi.
Agaricomycotina is one of three subdivisions of the Basidiomycota (fungi bearing spores on basidia), and represents all of the fungi which form macroscopic fruiting bodies. Agaricomycotina contains over 30,000 species, [ 1 ] divided into three classes : Tremellomycetes , Dacrymycetes , and Agaricomycetes . [ 2 ]
The hymenium is the tissue layer on the hymenophore of a fungal fruiting body where the cells develop into basidia or asci, which produce spores.In some species all of the cells of the hymenium develop into basidia or asci, while in others some cells develop into sterile cells called cystidia (basidiomycetes) or paraphyses (ascomycetes).
This is a list of families in the phylum Basidiomycota of kingdom Fungi.The Basidiomycota are the second largest phyla of the fungi, containing 31515 species. [1] The phylum is divided into three subphyla, the Pucciniomycotina (rust fungi), the Ustilaginomycotina (smut fungi), the Agaricomycotina, and two classes of uncertain taxonomic status (incertae sedis), the Wallemiomycetes and the ...
In addition to having septate basidia, heterobasidiomycetes also frequently possess large irregularly shaped sterigmata and spores that are capable of self-replication – a process where a spore, instead of germinating into a vegetative hypha, gives rise to a sterigma and a new spore, which is then discharged as if from a normal basidium.
It includes not only mushroom-forming fungi, but also most species placed in the deprecated taxa Gasteromycetes and Homobasidiomycetes. [3] Within the subdivision Agaricomycotina , which already excludes the smut and rust fungi, the Agaricomycetes can be further defined by the exclusion of the classes Tremellomycetes and Dacrymycetes , which ...