Agaricales
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Agaricaceae |
The order Agaricales, also known as gilled mushrooms (for their distinctive gills), or euagarics, contains some of the most familiar types of mushrooms. The order has about 4,000 species, or one quarter of all known homobasidiomycetes. They range from the ubiquitous button mushroom to the deadly destroying angel and the hallucinogenic fly agaric to the bioluminescent jack-o-lantern mushroom.
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[edit] Classification
Some notable fungi with gill-like structures, such as chanterelles, have long been recognised as being substantially different to usual Agaricales. Interestingly, molecular studies are showing other groups as being more divergent than previously thought, such as the genera Russula and Lactarius belonging to a separate order Russulales, and other gilled fungi, including such species as Paxillus involutus and Hygrophoropsis aurantiaca showing a closer affinity with Boletes in the order Boletales.
Also, some other quite distinctive fungi, the puffballs and the Beefsteak fungus have been recently been shown lie within the Agaricales.
[edit] Distribution and habitat
Agarics are ubiquitous, being found across all continents except Antarctica. Although all are terrestrial, their habitats include all types of woodland and grassland, varying largely from one species to another.
[edit] Characteristics
Basidiocarps of the agarics are typically fleshy, with a stipe, often called a stem or stalk, a pileus (or cap) and lamellae (or gills), where basidiospores are stored. This is indeed the stereotyped structure of what we would call a mushroom or toadstool.
[edit] Life cycle
The agarics' life cycle is very much representative of the basiodiomycetes. Clamp connections are present in the dikaryons of several species, but that is not always the case.
[edit] Propagation
The agarics always have their basiodiospores ejected from the basidium into the area between gill edges. The spores are then let fall to the ground or carried by the wind.
[edit] External links
- Moncalvo JM, et al. 2002. One hundred and seventeen clades of euagarics. Molecular Phylogenetics and Evolution 23:357-400. Available from: http://www.botany.utoronto.ca/faculty/moncalvo/117clade.pdf
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cs:Lupenotvaré de:Blätterpilze es:Agaricales fr:Agaricales ko:주름버섯목 it:Agaricales la:Agaricales lt:Agarikiečiai nl:Agaricales ja:ハラタケ目 no:Skivesopper pl:Pieczarkowce ru:Агариковые (порядок) fi:Helttasienet zh:伞菌目
