gastromycetes
Definition
Noun 1. A taxonomic class of fungi: Gastromycetes refers to a former taxonomic class of fungi characterized by their enclosed spore-bearing structures (hymenium). The spores mature inside this enclosed fruiting body before it opens or breaks down for dispersal. This group includes fungi commonly known as puffballs, earthstars, and stinkhorns.
Usage
- The Gastromycetes were once classified together based on their shared trait of having internally maturing spores.
- Mycologists studied the unique spore dispersal mechanisms of the Gastromycetes.
Advanced Usage
- Taxonomic Note: The term "Gastromycetes" is considered an obsolete taxonomic grouping in modern mycology. The fungi it described are now distributed among the classes Basidiomycota and Ascomycota based on genetic and more detailed morphological data. However, the term remains useful in a descriptive, morphological context.
- Morphological Description: The defining feature is the gasterothecium (the enclosed fruiting body). This is an adaptation for spore protection and for alternative dispersal methods, such as wind (puffballs) or insects (stinkhorns).
Variants and Related Words
- Gasteromycete (n): An alternative singular form for a member of this group.
- The puffball is a common gasteromycete.
- Gasteromycetous (adj): Relating to or characteristic of the gastromycetes.
- The fungus exhibited a gasteromycetous form.
Synonyms
- Gasteromycetes (n): A synonymous spelling and term for the same group.
- Stomach fungi (n, informal): A descriptive, non-scientific name referencing the enclosed, sac-like fruiting body.
Related Terms & Concepts
- Hymenium (n): The spore-bearing surface layer of a fungus. In gastromycetes, it is enclosed.
- Basidiomycota (n): The major phylum of fungi to which most former gastromycetes (like puffballs and stinkhorns) are now assigned.
- Angiocarpous (adj): A botanical term meaning having fruiting bodies that remain closed until spores are mature; describes the key feature of gastromycetes.
Noun
-
fungi in which the hymenium is enclosed until after spores have matured: puffballs; earth stars; stinkhorn fungi
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