Truncated giant club
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Truncated giant club ( Clavariadelphus truncatus ) |
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| Clavariadelphus truncatus | ||||||||||||
| ( Quél. ) Donk |
The trimmed giant or Hercules club ( Clavariadelphus truncatus ) is a rare, edible mushroom from the pig's ear relatives .
features
Macroscopic features
It forms solitary to gregarious, sometimes fused, non-leaved fruiting bodies . These have a typical club shape, clearly flattened to dented ("truncated") at the apex, with an often bulging and wrinkled edge. They are yellow to ocher orange on the outside. Towards the base, the color becomes a little darker and there may be a hint of lavender, with the stem base itself being light further down. The surface of the young mushroom is smooth, but later becomes increasingly wrinkled. The mushroom grows to 5–11 (–15) cm high and 2–5 (–8) cm in diameter. The flesh is white and firm, but also elastic and tough. When cut open it turns reddish brown in the air, with potassium hydroxide (KOH) it turns (light) red, with iron (II) sulfate (FeSO 4 ) it turns green. The meat tastes sweet, mild, often bitter after prolonged chewing and smells pleasantly inconspicuous.
Microscopic features
The spores are formed on the surface of the upper part; the lower part is sterile. The spore powder is whitish yellow to ocher in color. They are elliptoid, smooth, and hyaline , measuring 9–13 × 5–8 micrometers. Iodine solutions show no color reaction ( inamyloid ) with the spores .
Species delimitation
Due to its typical shape, the species is difficult to confuse. There is a distant resemblance to the inedible tongue giant club ( Clavariadelphus ligula ). It only occurs in coniferous forests and has a mild taste. The also inedible Hercules giant leg ( Clavariadelphus pistillaris ) is larger, more common and often tastes bitter.
Ecology and phenology
It grows in coniferous forests in a mycorrhizal symbiosis with the fir trees.
The fruiting bodies grow individually or in small groups between August and November, only occasionally they appear earlier.
distribution
The truncated giant club is common in Europe and Asia and is quite rare. It is listed as an endangered species on the Polish Red List of Endangered Species .
meaning
ingredients
The mushroom contains a medically important isoprene-like compound. It enriches zinc and the radioactive cesium -137.
The contained 24,25-dihydroxy-2- (3-hydroxy-3-methylglutaryl) -lanostanon- (3) (English Clavaric acid ) interferes with the farnesyl protein transferase (an enzyme involved in tumor development), which is therapeutic value for the treatment suspect certain types of cancer. In animal experiments on mice it caused a reduction in tumor growth. The fungus also shows antimicrobial properties.
Food value
It is edible , but due to its rarity it is gentle and is in some places under nature protection.
swell
- ↑ Markus Flück: Which mushroom is that? 3. Edition. Franckh-Kosmos Verlag, Stuttgart 2009, ISBN 978-3-440-11561-9 , pp. 317 .
- ↑ Hans E. Laux: The great cosmos mushroom guide. All edible mushrooms with their poisonous doppelgangers. Franckh-Kosmos, Stuttgart 2001, ISBN 3-440-08457-4 , p. 462.
- ↑ Hans E. Laux: Edible mushrooms and their poisonous doppelgangers . Collect mushrooms - the right way. Kosmos Verlags-GmbH, Stuttgart 2005, ISBN 978-3-440-10240-4 , p. 179 .
- ↑ Michael Wood & Fred Stevens: The Fungi of California - Clavariadelphus truncatus on MykoWeb.com
- ↑ Note Clavaric Acid: A Triterpenoid Inhibitor of Farnesyl-Protein Transferase from Clavariadelphus truncatus . In: Journal of Natural Products . 61, No. 12, 1998, pp. 1568-1570. doi : 10.1021 / np980200c .
