Laxitextum

Two-colored crust layer mushroom ( Laxitextum bicolor)

The crust layer mushrooms ( Laxitextum ) is a fungal genus of the family of spiky beard relatives. The one-year fruiting body cover in layers, the substrate and have a brown meat. The dark edge is usually bent back and the hymenophore white to cream. The fungi have thin-walled, amyloid and ornamented spores. Among a variety of the fruit layer ( hymenium ) thin-walled Gloeozystiden.

The type species is the two -colored crust layer mushroom ( Laxitextum bicolor).

• 5.1 Notes and references

Features

Macroscopic characteristics

The layered growing ( resupinat ) or recurved ( effuso - reflex ) to cap-like ( pileat ), annual fruiting bodies are relatively easy to detach from the substrate. They are up to 2 mm thick, and her back bent portion is radially fibrillös to procure tomentose and often zoned. The color is ocher to dull - brown or (especially inside) even darker. The smooth hymenophore other hand, is white to cream. The spore powder leaves a whitish cast. The brown meat ( context) has more of a soft consistency and can easily be flexible with fresh mushrooms. Older specimens can be tough.

Microscopic characteristics

The elliptical, thin-walled and rough spores have low warts or sting. They are show with the addition of iodine solution, a color reaction ( amyloid ) and measure 4-6 × 2.5-3.5 microns. The Hyphensystem is built monomitisch and has a fairly dense Hyphentextur. The Tramahyphen are brownish and not inflated, buckles are always available. The club-shaped basidia measure 16-30 microns in length and each have four curved sterigmata. Moreover, in the fruit layer ( hymenium ) and in the underlying Subhymenium cylindrical to club-shaped, and relatively slender Gloeozystiden occur. These are thin-walled, smooth, and 40-200 microns long.

Ecology and distribution

The fungus lives saprobiontisch on hardwood. It typically grows on branches and trunks have the floor. The fungus produces a white rot in the infested wood. The hymenium often shows black, dot-like spots. Each dot represents a pseudothecium of the parasitic fungus hose Capronia porothelia.

Species

In Europe, only a single species occurs, the Two- crust layer mushroom ( Laxitextum bicolor). Worldwide, there are three types:

System

As Lentz 1955, the genus defined Laxitextum he set three species in the genus: Laxitextum bicolor, Laxitextum crassum ( = Phanerochaete crassa ) and Laxitextum roseocarneum ( = Dendrocorticium roseocarneum ). The two last- mentioned species were later found in other species, so that the genus remained monotypic until Hjortstam and Ryvarden 1981 Laxitextum described lutescens and Laxitextum incrustatum. Within Laxitextum bicolor, however, reveal at least five inter sterile groups that can equally well be regarded as distinct species.

Molecular biological studies by Larsson et al. and Miller et al. show that the former because of the similar appearance to the layer fungi ( Stereum ) is related genus asked both close with the sting beards ( Hericium ) as well as with the tooth skins ( Dentipellis ). The sting beards coral-like fruiting body and a prickly ( hydnoid ) hymenophore while the tooth skins effuso reflexes fruiting bodies and also a hydnoides hymenophore have.

Swell

H. Jahn: Stereolde mushrooms in Europe ( Stereaceae Pil emend Parm, among other things, Hymenochaete. .. ). with particular reference to their Vorkonımens in the Federal Republic of Germany. In: Pilzkundliche Association in Westphalia (ed.): Westphalian MUSHROOM LETTERS. 8, No. Issue 4-7, 1971, p 118 (online).

Template: Internet resource / maintenance / access date is not in the ISO FormatLaxitextum. Lentz, U.S. Dept. Agric. Monogr. 24: 18 (1956). In: CABI databases: speciesfungorum.org. Accessed on 20 February 2013.