Hydnum
The stubble fungi ( Hydnum ) is a fungal genus of the family of stubble fungal relatives ( Hydnaceae ) and live in symbiosis with trees. The stalked fruiting bodies with a spiky hymenophore, only in one form, it is smooth pronounced.
The type species is the white-bread stubble fungus ( Hydnum repandum ).
Features
Macroscopic characteristics
The fruiting bodies are divided into pileus and stipe. Your color spectrum ranges from whitish to yellowish - brown to orange - reddish. The hats have young first a felt-like surface and verkahlen later. Rarely they are structured somewhat scaly. Below, they are covered with pfriemförmigen, whitish to orange brown colored spines, which in turn with the spore- producing fruit layer ( hymenium ) are covered. Only the rare form of depauperatum Eisporigen stubble mushroom has a smooth hymenophore. The spore powder leaves a white to ocher yellowish cast. The vollfleischige stem is central to laterally grown on the hat. The meat ( Trama ) is brittle, ungezont and tastes at the age sometimes bitter.
Microscopic characteristics
The Hyphensystem is monomitisch. The thin-walled, partly inflated and branched hyphae ( hyphae ) are transparent ( hyaline ) and wear buckles on the transverse walls ( hyphal septa ). The cylindrical- clavate spores stand ( basidia ) bear at the base also buckles. Per basidium usually mature four spherical to broadly elliptical spores. They are thin-walled, smooth, hyaline and show on contact with iodine solution, no color reaction ( inamyloid ). Sterile elements ( cystidia ) are missing.
Species delimitation
Other fleshy and hutbildende hedgehog mushrooms, the fruiting bodies on the ground, as Weißsporstachelinge ( Banker ), Rußporlinge ( Boletopsis ) and Braunsporstachelinge ( Sarcodon ) have colored or ornamented spores.
Ecology
The fruit bodies grow on the ground, rarely on decaying wood. The stubble fungi form an ectomycorrhizal with the roots of trees.
Species
Red-yellow stubble fungal Hydnum rufescens
Genabelter stubble fungal Hydnum umbilicatum