Exidia thuretiana
Whitish Drüsling ( Exidia thuretiana )
The Whitish Drüsling ( Exidia thuretiana, syn. Exidia albida ) is a species of fungus in the family of the Tremellomycetes ear lobe fungal relatives ( Auriculariaceae ). He decomposed dead branches and trunks of deciduous trees, especially beech.
- 2.1 cartilaginous Drüsling
- 2.2 warty Drüsling
- 5.1 Notes and references
Features
Macroscopic characteristics
Young fruiting bodies of white lichen Drüslings have a lentil to a disk-like shape, the substrate to be flat and firmly attached to it. Soon as the jelly- like structure to surfaces flow together with a length of up to 15 cm. The structure is wavy to nodular, ridged and has often lobed in the peripheral areas. The surface shows no Drüsenwärzchen, the edge is clearly separated. The colors range from whitish to bluish - gray on white to pink - ochraceous. If dry, the fruiting body shrinks to a thin, transparent layer.
Microscopic characteristics
The hyphae are colorless, 2-3.5 microns wide and have buckles on the septa. The elliptical basidia measure 15-21-24 × 11-15 - (17 ) microns, have Basalschnallen and develop 2 to 4 30-115 × 2-3 microns wide Epibasidien ripen at the ends of the spores. The latter are colorless, cylindrical- curved and have a size of 15-20 - (24 ) x 5.5-7 microns. They form cylindrically - curved and 5.5-6.5 × 2 microns wide, and secondary conidia spores, measuring 9-12 x 5-7 microns.
Artabgrenzung
Cartilaginous Drüsling
In particular, young, yet entirely white fruiting bodies of the cartilaginous Drüslings ( Exidia cartilaginea ) look similar to the white lichen Drüsling confusingly. However, the fruiting bodies fall out of a total of knubbeliger and less flattened. In addition, the edges of the double are happy ciliated. In addition, older fruiting bodies in the middle have a brownish to reddish brown coloration. The species prefers Linde as a substrate, but also occurs in oak, there sometimes associated with the Stop leagues Drüsling (E. glandulosa ).
Warty Drüsling
Faint or non-pigmented fruiting bodies of the warty Drüslings ( Exidia plana ) may look similar, but have Drüsenwärzchen on the surface. Microscopically, the type 4-5 microns are distinguished by smaller spores measure 10-12 (-17 ) ×.
Ecology
The Whitish Drüsling preferred beech and hornbeam - oak forests on sickerfrischen and well supplied with bases and nutrients floors. There colonized the moist mushroom lying, rotten branches and trunks and stumps corresponding to the optimal early and final phase of Vermorschung. Inside he caused by the breakdown of cellulose, hemicellulose and lignin, a white rot the wood pulp. The species prefers beech as the substrate, but also grows in other deciduous trees: maples, birches, alders, common ash, hornbeam, dogwood, common hazel, elderflower, linden, poplar, rose, willow and hawthorn.
Dissemination
In the Holarctic the Whitish Drüsling occurs in Europe and North Africa. In Europe, the fungus is ( submeridional ) temperat ( - Subboreal ), oceanic sub-oceanic spreading. In the West, the kind in the Benelux countries, the UK and France could be detected, an isolated occurrence comes from the Hebrides. In Central Europe finds from Germany, Austria and Poland are known. Southeastern outposts extend to Croatia. In the southern North Europe the way in Denmark, Norway and Sweden have found.
In western Germany, the whitish Drüsling is scattered by the West Frisian Islands off to the southeast Bavarian foothills of the Alps. In Baden- Württemberg the fungus is moderately common, slightly denser on limestone and calcareous clay in beech forests of the Jura, the northern Lake Constance and the Keuper- Lias area, lückiger in the Gäulandschaften and rarely in Oden and Black Forest. The fungus apparently avoids dry soils, sub-continental climate records and outspoken coniferous forest areas.
Exidia thuretiana colonized suitable habitats in the colline to lower eumontanen level, above and below it is the kind rarely found.