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Taphrinomycotina is one of three subphyla constituting the Ascomycota
Ascomycota

The Ascomycota are a Phylum of the kingdom Fungi, and subkingdom Dikarya, whose members are commonly known as the Sac Fungi. They are the largest phylum of Fungi, with over 30,000 species....
 (fungi that form their spore
Spore

In biology, a spore is a reproduction structure that is adapted for biological dispersal and surviving for extended periods of time in unfavorable conditions....
s in a sac-like ascus
Ascus

An ascus is the sexual spore-bearing cell produced in Ascomycota fungi. On average, asci normally contain 8 ascospores, produced by a meiosis cell division followed, in most species, by a mitosis cell division....
) and is more or less synonymous with the slightly older invalid name Archiascomycetes (sometimes spelled Archaeascomycetes). Recent molecular
Molecular phylogeny

Molecular phylogenetics, also known as molecular systematics, is the use of the structure of molecules to gain information on an organism's evolutionary relationships....
 studies suggest that the group is monophyletic and basal to the rest of the Ascomycota.

The Schizosaccharomycetes
Schizosaccharomycetes

Schizosaccharomycetes is a class in the kingdom of fungi. It contains the order Schizosaccharomycetales, the fission yeasts.References...
 are yeast
Yeast

Yeasts are eukaryote microorganisms classified in the Kingdom fungus, with about 1,500 species currently described; they dominate fungal diversity in the oceans....
s (e.g. Schizosaccharomyces
Schizosaccharomyces

'Schizosaccharomyces' is a genus of binary fission yeasts. The most well studied species is Schizosaccharomyces pombe; like the distantly related Saccharomyces cerevisiae, S....
) that reproduce by fission rather than budding unlike most other yeasts, many of which are in the subphylum Saccharomycotina
Saccharomycotina

Saccharomycotina is a subphylum of the phylum Ascomycota , and consists of yeasts - they form no ascocarps , their asci are naked, and they can reproduce asexually by budding....
.

The Taphrinomycetes
Taphrinomycetes

Taphrinomycetes are a class of ascomycete fungi. It includes the single order Taphrinales....
 are dimorphic plant parasites (e.g.






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Taphrinomycotina is one of three subphyla constituting the Ascomycota
Ascomycota

The Ascomycota are a Phylum of the kingdom Fungi, and subkingdom Dikarya, whose members are commonly known as the Sac Fungi. They are the largest phylum of Fungi, with over 30,000 species....
 (fungi that form their spore
Spore

In biology, a spore is a reproduction structure that is adapted for biological dispersal and surviving for extended periods of time in unfavorable conditions....
s in a sac-like ascus
Ascus

An ascus is the sexual spore-bearing cell produced in Ascomycota fungi. On average, asci normally contain 8 ascospores, produced by a meiosis cell division followed, in most species, by a mitosis cell division....
) and is more or less synonymous with the slightly older invalid name Archiascomycetes (sometimes spelled Archaeascomycetes). Recent molecular
Molecular phylogeny

Molecular phylogenetics, also known as molecular systematics, is the use of the structure of molecules to gain information on an organism's evolutionary relationships....
 studies suggest that the group is monophyletic and basal to the rest of the Ascomycota.

The Schizosaccharomycetes
Schizosaccharomycetes

Schizosaccharomycetes is a class in the kingdom of fungi. It contains the order Schizosaccharomycetales, the fission yeasts.References...
 are yeast
Yeast

Yeasts are eukaryote microorganisms classified in the Kingdom fungus, with about 1,500 species currently described; they dominate fungal diversity in the oceans....
s (e.g. Schizosaccharomyces
Schizosaccharomyces

'Schizosaccharomyces' is a genus of binary fission yeasts. The most well studied species is Schizosaccharomyces pombe; like the distantly related Saccharomyces cerevisiae, S....
) that reproduce by fission rather than budding unlike most other yeasts, many of which are in the subphylum Saccharomycotina
Saccharomycotina

Saccharomycotina is a subphylum of the phylum Ascomycota , and consists of yeasts - they form no ascocarps , their asci are naked, and they can reproduce asexually by budding....
.

The Taphrinomycetes
Taphrinomycetes

Taphrinomycetes are a class of ascomycete fungi. It includes the single order Taphrinales....
 are dimorphic plant parasites (e.g. Taphrina
Taphrina

Taphrina is fungal genus within the Ascomycota that causes leaf and catkin curl diseases and witch's brooms of certain flowering plants. One of the more commonly observed species causes peach leaf curl....
) with both a yeast state and a filamentous (hyphal) state in infected plants. They characteristically infect leaves, catkins and branches, not roots.

The Neolectomycetes are species in a single genus, Neolecta
Neolecta

Neolecta is a genus of ascomycetous fungus that have fruiting bodies in the shape of unbranched to lobed bright yellowish, orangish to pale yellow-green colored, club-shaped, smooth, fleshy columns up to about 7cm tall....
, which are the only members of the subphylum that form fruiting bodies, and which specifically grow out of root tips. They may have a yeast state (ascospores bud in the asci).

The Pneumocystidomycetes
Pneumocystis pneumonia

Pneumocystis pneumonia is a form of pneumonia caused by the yeast-like fungus, Pneumocystis jirovecii. This species of fungus is specific to humans....
 also encompasses only one genus, Pneumocystis
Pneumocystis pneumonia

Pneumocystis pneumonia is a form of pneumonia caused by the yeast-like fungus, Pneumocystis jirovecii. This species of fungus is specific to humans....
, one of which causes Pneumocystis pneumonia (PCP) in humans. All species infect mammalian lungs and are yeast
Yeast

Yeasts are eukaryote microorganisms classified in the Kingdom fungus, with about 1,500 species currently described; they dominate fungal diversity in the oceans....
s.

None have ascogenous hyphae
Ascomycota

The Ascomycota are a Phylum of the kingdom Fungi, and subkingdom Dikarya, whose members are commonly known as the Sac Fungi. They are the largest phylum of Fungi, with over 30,000 species....
 giving rise to the asci.