Taphrina betulae - a species of mushrooms of the Taphrina genus of the Ascomycota department, a birch parasite ( Betula ), causes leaf spotting.
| Taphrina betulae |
| Scientific classification |
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| The kingdom : | Higher mushrooms |
| Subdivision : | Taphrinomycotina |
| Class: | Taphrinomycetes ( Taphrinomycetes OEErikss. & Winka , 1997 ) |
| Subclass : | Taphrinomycetidae Tehler , 1988 |
| Family: | Taphrinaceae ( Taphrinaceae Gäum. & CWDodge , 1928 ) |
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| International Scientific Name |
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Taphrina betulae ( Fuckel ) Johanson 1886 |
| Synonyms |
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- Exoascus betulae fuckel 1874 basionym
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Content
Spots on leaves up to 1 cm in size, rounded, pale green, yellow or reddish on the upper surface of the leaf, light green on the lower surface; later turn brown. Can occupy up to a third of the sheet surface.
Mycelium strongly branched, develops under the cuticle.
The marsupial layer (“ hymenia ”) is waxy, mealy, often develops on the upper side of the leaves.
Aski are eight-spore, 15–45 × 8–18 μm in size, cylindrical with a rounded or blunt tip. The basal cells ( see Tafrin’s article ) are 7–17 × 8–29 µm, usually wider than ascov, not wedged between plant cells, but placed on the surface together with ascc, which is a characteristic feature of this species.
Ascospores are ellipsoidal or spherical, 4–6 × 3.5–6 µm, sometimes budding asca.
Sporulation observed in June - September.
Taphrina betulae is widespread in Eurasia - on the British Isles and from Central Europe to the Far East , more characteristic of the northern and mountainous regions.
The species was first described in Denmark on the birch ( Betula pendula ), it also affects other species. In Norway, the mushroom is found on the downy birch ( Betula pubescens ), in Poland - on the Oikov birch ( Betula oycoviensis ), in the Far East - on the ridge birch ( Betula costata ).