Green yolk blubber
| Green yolk blubber | ||||||||||||
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| Russula urens | ||||||||||||
| Romell |
The Green Dotter-Täubling or Burning Green-Täubling ( Russula urens , Syn .: Russula cuprea var. Urens ) is a fungus from the family of the Täubling related . The medium-sized and more or less green-capped Täubling belongs to the family group of the purple-brown yolk-Täubling ( R. cuprea ). The species rank of this deafblings is disputed; many authors see in it only a variety of the collective species Russula cuprea , which contains a number of clans that are difficult to separate from one another.
features
Macroscopic features
The (7.5) 8-10.5 cm wide hat is initially convex, but soon spread out and later pressed flat in the middle. The edge is regular and rounded and soon wide, knuckled and grooved to furrowed (in old age it is almost up to the middle of the hat). The hat skin shines and is only slightly matt on the edge when dry. The hat is yellowish to olive green in color, but can also be olive gray. In old age, the hat can fade a lot and is then even pale whitish yellow in color and is reminiscent of the pale taupe ( R. galochroa ). At the edge the hat is often more strongly colored than in the middle and can sometimes even be tinted pale flesh purple.
The mostly more or less distant lamellae are initially pale, but soon saffron-yellow to deep orange-yellow. They are attached to the stem or more or less bulged or free. The 6–11 (–15) mm wide lamellae are widest in the outermost third, but usually not or only slightly bulbous. Only in exceptional cases are they mixed in with a few intermediate lamellas. The blade edge is simple and smooth. The spore powder is deep ocher yellow ( IVd according to Romagnesi ).
The 6.5–8 (–12) cm wide and 1–2.5 cm wide stem is pure white, slightly wrinkled, bald, matt or slightly silky, shiny. The stem is more or less uniformly cylindrical. The stem base changes color to a dirty gray-brownish color when it dries or as it ages, the stem meat is initially firm and later becomes spongy and hollow and is then very fragile.
The almost odorless meat is pure white and when ripe is soft to spongy and unusually fragile. After some chewing, it tastes decidedly spicy, but not quite as fiery as the insidious Täubling ( R. badia ).
Microscopic features
The almost spherical spores are 9-10 (11.5) µm long and 8 (8.5) µm wide and have clearly isolated, thorny warts up to 1.5 µm high. The cylindrical pileocystidia are 6–10 µm wide and 0–2-fold septate. Sometimes the hyphal end cells are thickened or deformed at their ends and more nodular than sagging. The hair as well as the cystidia have numerous diverticula (cone-like or sack-like bulges)
Species delimitation
It is difficult to tell the difference between all the pigeons of the Cupreinae subsection ( Urentinae ). The Scharfe Braun-Täubling is particularly similar , which also has a quite large and sometimes yellowish-brown colored and olive-tinted hat. Its fruit bodies smell similar to the gall bladder or fruit compote.
Ecology and diffusion
According to Bon , the deafwood is a type of deciduous forest that is common among oaks and hornbeams. The green yolk -hornbill is therefore mainly found in oak-hornbeam forests and mixed oak forests. The fungus likes neutral, loamy to lime-rich soils.
The green yolk Bluebird is a European type of Bluebird that is only a little more common in southern Scandinavia. It is considered rare, but is often not differentiated from Russula cuprea , since according to the index fungorum it is only a synonym of the purple-brown yolk-blubber. Therefore, its exact distribution in Europe is unknown.
Systematics
Inquiry systematics
The green yolk-deaf is placed by Bon in the subsection Cupreinae ( Urentinae ), which in turn is part of the Insidiosinae section . The subsection mostly contains small to medium-sized, more or less pungent-tasting pigeons. The hats are very variable in color and usually clearly grooved on the edge. The spore powder is colored intensely yellow.
meaning
Like all pungent-tasting deafblings, the green yolk-deafblings are considered inedible.
literature
Individual evidence
- ↑ Marcel Bon (ed.): Parey's book of mushrooms . Franckh-Kosmos Verlag, Stuttgart 2005, ISBN 3-440-09970-9 , pp. 76 .
- ↑ a b c d Russula urens. (PDF; 1.4 MB) Monographic Key to European Russulas (1988). (No longer available online.) In: The Russulales website w3.uwyo.edu. P. 39 , archived from the original on July 28, 2010 ; Retrieved February 12, 2012 (English, translation of M. Bon's Russula key).
- ^ Rolf Singer: Four interesting European Russulae of subsections Sardoninae and Urentinae, sect. Russula . In: Sydowia . Vol .: 16, 1963, pp. 289–301 (English, online [PDF; 12.3 MB ]).
- ^ A b c Alfred Einhellinger: The genus Russula in Bavaria . In: Bibliotheca Mycologica . 3. Edition. tape 112 . Berlin / Stuttgart 1994, ISBN 3-443-59056-X , p. 183 .
- ^ W. Demon, A. Hausknecht, I. Krisai-Greilhuber: Database of Austria's mushrooms. In: austria.mykodata.net. Austrian Mycological Society, 2009, accessed September 2, 2011 .
- ↑ Russula urens Romell. Belgian Species List. In: species.be. Royal Belgian Institute of Natural Sciences, 2012, accessed February 7, 2012 .
- ↑ Z. Tkalcec & A. Mesic: Preliminary checklist of Agaricales from Croatia V: . Families Crepidotaceae, Russulaceae and Strophariaceae. In: Mycotaxon . tape 88 , 2003, ISSN 0093-4666 , p. 297 ( online [accessed August 31, 2011]).
- ↑ Karel Tejkal: www.myko.cz/myko-atlas - Russula urens. In: www.myko.cz. Retrieved February 6, 2016 (cz).
- ↑ Russula urens. (No longer available online.) In: GBIF Portal / data.gbif.org. Archived from the original on January 20, 2015 ; Retrieved August 18, 2011 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Russula urens. In: grzyby.pl. Retrieved February 6, 2016 .
- ↑ Russula urens. In: verspreidingsatlas.nl. Retrieved May 8, 2012 .
- ↑ Russula urens in the PILZOEK database. In: pilzoek.de. Retrieved August 18, 2011 .
