Yellow-green leather blubber
| Yellow-green leather blubber | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Russula luteoviridans | ||||||||||||
| C. Martin |
The yellow-green deafness ( Russula luteoviridans in the sense of Blum ) is a fungus from the family of deaf relatives . The rare taxon is very controversial because it was only inadequately described by Martin. The very rare, medium-sized blubber has a predominantly green colored hat, the lamellae are yellow-orange when ripe and the spore powder is yolk-yellow. The meat tastes mild and the cap skin contains encrusted, multiple septate primordial hyphae. The fruiting bodies appear in the coniferous forest under spruce and fir trees in September and October.
features
Macroscopic features
The irregularly shaped hat is 6–9 (–10) cm wide and completely green, yellowish green or pale olive colored, with more reddish or brown-black tones towards the edge. The hat skin is matt and completely removable. The long, crowded lamellae are wide (up to 15 mm), initially almost white and yellow-orange when ripe. The spore powder is also yolk yellow ( IVcd according to Romagnesi ). The very strong, cylindrical handle is (3) 7.5–9 cm long and (1.4) 2.3–3 cm wide. The whitish flesh is almost invariable and tastes more or less mild. After prolonged chewing, it should also taste spicy. The odor is weak or absent. With iron sulphate it turns orange-pink, the guaiac reaction is positive.
Microscopic features
The spores are (7.5) 8-10 (-11) µm long and (7) 7.5-9 9.5) µm, the Q value (quotient of spore length and width) is 1.12. The cap skin contains numerous, septate, at most slightly clubbed, mostly even slightly narrowed towards the tip, very strongly encrusted primordial hyphae which are (3.5) 4–6 (–7) µm wide. The cap skin hyphae are rather narrow and only 2.5-3 µm thick. They end bluntly or run out slightly narrowed.
Species delimitation
The green yolk blubber ( Russula urens ) can look very similar, but its meat tastes clearly spicy. The brown leather deafness ( R. integra ) and the white-stemmed leather deafness ( R. romellii ) have a similar appearance and can sometimes be more or less greenish or olive-brown in color. The brown leather deafness, however, has Pileocystiden, which are stained with sulfovanillin or -benzaldehyde. In addition, the white-stalked leather-Täubling grows in the beech forest under beeches. The soft Täubling ( R. mollis ), which some authors even consider synonymous, is also very similar . But both its fruiting bodies and its spores are significantly smaller, and it can also be found in deciduous forests.
Ecology and diffusion
The Täubling occurs in coniferous forests , according to Blum , mycorrhizal partners are fir and spruce . Einhellinger found the Täubling in an acidic, somewhat boggy coniferous forest in the Upper Palatinate on loamy, sandy soil over chalk. The fruiting bodies appeared between September and October. The species is very rare in Germany and probably elsewhere in Europe. Blum found the specimens he has described in the Pyrenees. In Germany the Täubling has so far only been proven with certainty in Bavaria.
Systematics
The rare species was first described by C. Martin in 1894, but it was so inadequate that later authors could not correctly assign the species. J. Schäffer considered the taxon to be synonymous with Russula urens , the green yolk hornbill . Since Martin's description of R. luteoviridans is older than Romell's description of R. urens , he adopted this name for the green yolk bling. However, Schäffer discovered even then that there may have been more than one taxon described under this name. In addition to a hot-tasting variety, he also names almost mild forms. The epithet "luteoviridans" is derived from "luteus" (yellow) and "viridans" (green) and is an indication of the more or less yellow-green color of the hat.
Inquiry system
Romagnesi places the deaf in its section Polychromae and there in the subsection Integroidinae . With Bon, the deaf is also in the subsection Integroidinae , but it is in the section Lilaceae .
meaning
As a mild-tasting deafness, the yellow-green leather deafness should be edible, but the deafness is so rare that it does not play a role as an edible mushroom.
Individual evidence
- ↑ Russula luteoviridans. C. Martín, Bull. Soc. bot. Genève 7: 187 (1894). In: indexfungorum.org. Retrieved April 29, 2012 .
- ↑ a b c Russula luteoviridans. (PDF (1.4 MB)) Monographic Key to European Russulas (1988). In: The Russulales website w3.uwyo.edu. S. BON , archived from the original on July 28, 2010 ; Retrieved June 20, 2011 (English, translation by M. Bon's Russula key).
- ↑ Russula luteoviridans. (DOC) Russulas. Micologia.biz Web de micología Europea, accessed June 20, 2011 (Spanish).
- ↑ a b c d Alfred Einhellinger: The genus Russula in Bavaria . In: Bibliotheca Mycologica . 3. Edition. tape 112 . Lubrecht & Cramer, Berlin / Stuttgart 1994, ISBN 3-443-59056-X , p. 114 .
- ↑ a b German Josef Krieglsteiner (ed.), Andreas Gminder , Wulfard Winterhoff: Die Großpilze Baden-Württemberg . Volume 2: Stand mushrooms: inguinal, club, coral and stubble mushrooms, belly mushrooms, boletus and deaf mushrooms. Ulmer, Stuttgart 2000, ISBN 3-8001-3531-0 , p. 580.
- ↑ J. Schäffer : Russula monograph . In: Annales Mycologici . tape 31 , 1933, pp. 504 ( online [accessed April 29, 2012]).
- ^ Karl Ernst Georges: Comprehensive Latin-German concise dictionary (luteus). In: zeno.org. Retrieved April 29, 2012 .
- ^ Karl Ernst Georges: Comprehensive Latin-German concise dictionary (viridans). In: zeno.org. Retrieved April 29, 2012 .