Whitish glandular
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Whitish Drüsling ( Exidia thuretiana ) |
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| Exidia thuretiana | ||||||||||||
| ( Lév. ) Fr. |
The whitish glandular ( Exidia thuretiana , syn. Exidia albida ) is a type of fungus of the Tremellomycetes from the family of the ear flap fungus relatives (Auriculariaceae). It breaks down dead branches and trunks of deciduous trees, especially beech .
features
Macroscopic features
Young fruiting bodies of the whitish glandle have a lenticular to disc-like shape, lie flat on the substrate and are firmly attached to it. Soon the gelatinous structures flow together to form coatings with a length of up to 15 cm. The structure is wavy to bumpy, furrowed and often appears lobed in the edge areas. The surface shows no glandular papillae, the edge is clearly set off. The colors range from whitish to grayish to bluish white to pinkish ocher. When dry, the fruiting body shrinks to a thin, transparent layer.
Microscopic features
The hyphae are colorless, 2–3.5 µm wide and have buckles on the septa . The elliptical basidia measure 15–21–24 × 11–15– (17) µm, have basal buckles and each develop 2 to 4 30–115 × 2–3 µm large epibasidia, at the ends of which the spores mature. The latter are colorless, cylindrically curved and have a size of 15–20– (24) × 5.5–7 µm. They form cylindrically curved conidia measuring 5.5–6.5 × 2 µm as well as secondary spores measuring 9-12 × 5–7 µm.
Species delimitation
Cartilaginous glandular
Young, still completely white fruiting bodies of the cartilaginous glandular ( Exidia cartilaginea ) look very similar to the whitish glandular. However, the fruit bodies are overall more knobby and less flattened. In addition, the edges of the doppelganger are often ciliated. In addition, older fruiting bodies have a brownish to rust-brown color in the middle. The species prefers linden as a substrate, but is also found on oak, where it is sometimes associated with the stubble gland ( E. glandulosa ).
Warty glandular
Pale or pigmentless fruiting bodies of the warty glandular ( Exidia plana ) may look similar, but have glandular papules on the surface. The species can be distinguished microscopically by smaller spore sizes of 10–12 (–17) × 4–5 µm.
ecology
The whitish Drüsling preferred copper beech - and hornbeam - oak forests on sickerfrischen and well-furnished with bases and nutrients floors. There, the fungus colonizes damp, rotten branches and trunks as well as corresponding stumps in the optimal and early final phase of the rot. Inside he caused by the degradation of cellulose , hemicellulose and pulp lignin , a white rot . The species prefers red beech as a substrate , but also grows on other deciduous trees: maples , birches , alders , common ash , hornbeam, dogwood , common hazel , elder , linden , poplar , roses , willow and hawthorn .
distribution
In the Holarctic, the whitish Drüsling occurs in Europe and North Africa. In Europe, the fungus is (submeridional) temperate (subboreal), oceanic-suboceanic widespread. In the west, the species was found in the Benelux countries, England and France, and an isolated occurrence comes from the Hebrides. Finds from Germany, Austria and Poland are known in Central Europe. South-eastern outposts extend to Croatia. In southern northern Europe, the species was found in Denmark, Norway and Sweden.
In the west of Germany, the whitish Drüsling occurs scattered from the West Frisian Islands to the southeast Bavarian Alpine foothills. In Baden-Württemberg the fungus is moderately widespread, somewhat denser above lime and marl limestone in the red beech forests of the Alb, the northern Lake Constance and Keuper-Lias areas, more patchy in the Gaulandschaften and rarely in the Oden and Black Forests. The fungus evidently avoids dry soils, subcontinental climates and pronounced coniferous forest areas.
Exidia thuretiana colonizes suitable habitats in the area of the colline to lower eumontane level, the species is rarely found below and above.
swell
Individual evidence
- ↑ a b Hans E. Laux: The great cosmos PilzAtlas . Franckh-Kosmos Verlag, Stuttgart 2002, ISBN 3-440-07229-0 .
- ↑ a b Walter Jülich: The non-leaf mushrooms, gelatinous mushrooms and belly mushrooms . In: Small cryptogam flora. Vol. II b / 1. VEB Gustav Fischer Verlag, Jena 1984.
- ↑ a b German Josef Krieglsteiner (Ed.): Die Großpilze Baden-Württemberg . Volume 1: General Part. Stand mushrooms: jelly, bark, prick and pore mushrooms. Ulmer, Stuttgart 2000, ISBN 3-8001-3528-0 .
