Dark red wolf deaf

from Wikipedia, the free encyclopedia
Dark red wolf deaf
Dark red wolf's deaf (Russula fuscorubra) drawing Bresadola, Latin description (online)

Dark red wolf's deaf ( Russula fuscorubra ) drawing Bresadola, Latin description (online)

Systematics
Class : Agaricomycetes
Subclass : insecure position (incertae sedis)
Order : Russulales (Russulales)
Family : Deaf relatives (Russulaceae)
Genre : Russulas ( Russula )
Type : Dark red wolf deaf
Scientific name
Russula fuscorubra
( Bres. ) J. Blum J. Blum

The dark red or dark wolf's deaf ( Russula fuscorubra , syn .: Russula torulosa var. Fuscorubra ) is a fungus from the family of deaf relatives . Today it is only regarded as a variety of the wolf- blubber (Russula toluosa).

features

Macroscopic features

The 6–8 cm wide hat is fleshy and firm. It is convex at first, then flat or expanded and only slightly depressed. The edge is blunt, rounded and rather curved. In old age it is indistinctly grooved. The cap skin, which shines when wet, is only slightly removable (up to 1/3 of the radius at most). The surface is often irregular and uneven. The hat is colored lavender-purple, dark-purple, purple-red. The center is often almost blackish, the hat can be almost uniform in color or more reddish-zoned on the edge. More rarely one can find specimens with a yellowish zone, such as the iodoform deafblings .

The thin, almost squeezed to slightly distant lamellae are bulging, grown (sinuat) or run down slightly on the stem. They are cream-colored, later dark ocher and sometimes tinged with purple towards the edge. The spore powder is ocher colored ( IIIb, IIIc according to Romagnesi )

The stem is as long or longer than the diameter of the hat (4) 5-7 (9) cm. It is tinged with pinkish-purple or more or less purple, at the top it is often light gray. All in all, it is tinted more purple than the Wolfs-Täubling or it is more or less yellow ocher. Often it is grainy or punctuated with interruptions or it is drawn almost reddish, like the gooseberry pigeon.

The firm, white flesh can be slightly yellowish to greenish in color on the handle. It has a fruity smell, but does not smell like apples and tastes very hot. The iron sulfate reaction is weak and slow. The guaiac reaction is also negative or weak.

Microscopic features

The egg-shaped spores are 8–9 µm long and 6.5–7.5 µm wide. They are warty to pustular, with the warts often burr-like or linked together like a chain. The mostly hemispherical or short conical warts are 0.37 µm or even 0.75 µm high. The apiculus measures 1–1.5 × 1–1.35 µm. The hilly spot is irregular or rounded and about 2.75–3.75 µm long and 1.25–2.5 µm wide. It is sometimes small black at the edge but clearly amyloid.

The basidia are 43–50 µm long and 8–11.5 µm wide. The spindle-shaped, almost bulbous cystids are (65) -100-120 µm long and (7.5–) 12-15 µm wide. They are potbellied, rarely blunt or cylindrical. They turn black in sulfovanillin.

The cap skin hyphae are short and 3–4 µm wide. The 6–12 µm wide Pileocystiden are cylindrical, obtuse spindle or obtuse and quite voluminous. They are mostly unsept. The subcutis contains numerous laticifers .

Ecology and diffusion

The dark red wolf's deafness is, like all deafnesses, a mycorrhizal fungus that forms a symbiosis with spruce in particular. The Täubling can be found in neutral or calcareous pine or spruce forests, especially in the mountainous region.

Systematics

Inquiry systematics

Today, the dark red wolf's deaf is only regarded as a variety of the wolf's deaf. Together with these he is after Bon in the Sanguinae subsection , which is within the Firmae section. This subsection combines pungent-tasting pigeons with red to purple hats and cream to ocher-colored spore powder.

Subspecies and varieties

  • Russula fuscorubra var. Major Nicolaj (1976)
Practically the same as the type but more robust and larger. Two-tone with a more or less faded edge and a black center. Some collections are almost completely blackish. The smell is slightly fruity and the sulfoformol reaction is positive. The spore powder is dark cream to light-colored. ( IId-IIIa according to Romagnesi )
  • Russula fuscorubra fo. olivovirus Blum
Stem at least as long as the hat is wide. The smell is faint or absent. The colors are dull or cloudy and are reminiscent of the lemon puff or they are more olive, ocher yellow with a hint of greenish, greenish-ocher or yellowish-green to washed-out yellowish. Sometimes the stem is covered with a greenish tinge. The slats are thick and almost greasy to the touch. The spores have warts 0.5 (1) µm high, some of which are burr and some of which are networked. The shape loves neutral soils and is found in pine or spruce forests.

meaning

Like all pungent-tasting deafblings, the dark red deafblings are not edible.

literature

Individual evidence

  1. ↑ a b c Monographic Key to European Russulas (1988). (PDF; 1.4 MB) In: English translation by M. Bons Russula key :. The Russulales Website, p. 35 , archived from the original on July 28, 2010 ; Retrieved April 26, 2011 .
  2. ↑ Russula fuscorubra. (PDF DOC, 2.9MB) Micologia.biz Web de micología Europea, p. 103 , accessed on March 21, 2011 (Spanish).
  3. ^ H. Romagnesi: Russula fuscorubra. In: Les Russules d'Europe et d'Afrique du Nord (1967). MycoBank, the Fungal website, accessed April 26, 2011 (French).

Web links