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Basidiomycetes and Ascomycetes

  • Date Submitted: 04/18/2013 10:43 PM
  • Flesch-Kincaid Score: 38.1 
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Harmful:3
1. Cause diseases and infections such as athlete's foot, ringworm, lung infections ... as well as irritating those with allergies
2. Decay food
3. Cause diseases of our crops
4. Infect our ornamental plants
5. Ruin our clothing and other possessions
Types of Fungi

Basidiomycetes and Ascomycetes

Fungi with sporophores (fruiting bodies) large enough to be readily visible will usually belong to one of two main groups. The Basidiomycetes or the Ascomycetes. The main difference between these two groups is in the way in which they produce theirmicroscopic spores.
In the Basidiomycetes, the spores are produced externally, on the end of specialised cells called basidia.

In Ascomycetes, spores are produced internally, inside a sac called an ascus.

Asci and basidia are both microscopic structures.

Basidiomycetes
Ascomycetes

Fungi with spores produced externally, on specialised cells called basidia.

Typically, there are 4 spores per basidium, although this varies from 1 to many, depending on the species.

Fungi with spores produced inside a sac called an ascus.
Each ascus usually contains 8 spores (sometimes 4, depending on the species).
Basidiomycetes

Within the Basidiomycetes, there are three main groups. These are separated by means of differences in the basidia and spores and how these are arranged on the fruiting body.

Gill Fungi (Order Agaricales and Russulales)
Boletes (Order Boletales)
Polypores, Chanterelles, Coral Fungi, Crust Fungi, Fan Fungi and Toothed Fungi (Order Aphyllophorales)
Stinkhorns (Order Phallales)
Puffballs and Earthstars
(Order Lycoperdales and Tulostomatales)
Earthballs (Order Sclerodermatales)
Bird's Nest Fungi (Order Nidulariales) Jelly Fungi (Order Tremellales)
The basidia develop in layers, called a hymenium, lining gills, tubes, teeth or folds on the fruiting bodies. Basidia are enclosed inside the fruiting body.
Basidia in a hymenium or layer on the outer surface of the fruiting...

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