Ocher-yellow flour cup
| Ocher-yellow flour cup | ||||||||||||
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Yellow ocher flour cup ( Cenangium ferruginosum ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Cenangium ferruginosum | ||||||||||||
| Fr. |
The ocher-yellow flour cup ( Cenangium ferruginosum ) is a largely saprophytic bark fungus on pines from the Helotiaceae family .
features
Macroscopic features
The apothecia are closed in the shape of a jug when young and open in the shape of a bowl when ripe. They reach a diameter of 1.5 to 3 mm and are short stalked to sessile. The inside is yellowish ocher, while the outside is dark brown with a floury-sticky surface.
Microscopic features
The spores are hyaline , elliptical, smooth and are 10 to 13 × 5.5 to 7 μm in size. The asci are cylindrical-club-shaped and measure 85 to 105 × 10 to 13 μm. The paraphyses are filamentous and often 3 to 5.5 μm at the often thickened tip. The associated rare minor fruit form is characterized by elliptical, colorless 5 to 6 × 2 to 3 μm conidia of the Phomopsis type.
ecology
The species predominantly grows saprobionic on dead branches of Scots pine , black pine and mountain pine . Occasionally, however, as a parasite of weakness, it causes the jaws to shrink. But this is mostly in connection with other fungi, especially with Ascocalyx abietina or in connection with the needle- sheathed gall mosquito ( Thecodiplosis brachyntera ). The Aleppo pine is also a potential host. Here, Cenangium ferruginosum causes the needles to turn yellow. It can spread to the twig bark and cause necrosis and resin leakage. If the trunk is attacked, the overlying parts of the crown are removed. The species occurs mainly in young populations where it can occur epidemically every 1 to 3 years.
supporting documents
- Ewald Gerhardt: Mushrooms . BLV Buchverlag, Munich 2006, ISBN 978-3-8354-0053-5 , p. 559
- Heinz Butin : Diseases of the forest and park trees . Georg Thieme Verlag, 1983, ISBN 3-13-639002-4 , pp. 77f
- I. Lorenz, 1967: Studies on the biology and pathogenicity of Cenangium ferruginosum Fr. Arch. Plant protection. 3: 143-153.
Individual evidence
- ↑ Schütt, Weisgerber, Schuck, Lang, Stimm, Roloff: Lexicon of conifers. Nikol, Hamburg 2008, ISBN 3-933203-80-5 , p. 400
