Disciotis venosa
| Disciotis venosa | |
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| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Pezizomycetes |
| Order: | Pezizales |
| Family: | Morchellaceae |
| Genus: | Disciotis |
| Species: | D. venosa |
| Binomial name | |
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Disciotis venosa (Pers.) Boud. (1893) |
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| Synonyms | |
Disciotis venosa, commonly known as the bleach cup, veiny cup fungus, or the cup morel is a species of fungus in the family Morchellaceae. Fruiting in April and May, they are often difficult to locate because of their nondescript brown color. Found in North America and Europe, they appear to favor banks and slopes and sheltered sites. Although D. venosa is considered edible, it may resemble several other species of brown cup fungi of unknown edibility.
The fungus was first described as Peziza venosa by Christian Hendrik Persoon in 1801, from collections made near Klagenfurt, Austria.Jean Louis Émile Boudier transferred it to Disciotis in 1893.
Bruno Perco described the form Disciotis venosa f. radicans from collections made in Italy.
The specific epithet venosa, meaning "veined", refers to the veins on the inner cup surface. Common names for the species include bleach cup, veiny cup fungus, and cup morel.
Fruit bodies produced by this fungus are cup- or disc-shaped, up to 20 cm (8 in) wide. The interior surface of the cup, the hymenium, is dark brown. It tends to become folded into vein-like markings, hence the specific epithet venosa; these markings, however, may be absent in young individuals. The exterior surface is a whitish color, covered with pustules. There is a short stipe that anchors the cup to the ground. Although young fruiting bodies are cup-shaped, when they are 7 to 8 cm (2.8 to 3.1 in) in diameter, the apothecia split and flatten down to lie in the soil. They are very brittle. The fruit bodies have been estimated to have a lifespan of up to 12 weeks. The flesh of the fungus has a bleach-like odor when it is broken.
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