Honeycomb truffle

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Honeycomb truffle
Honeycomb truffle

Honeycomb truffle

Systematics
Subdivision : Agaricomycotina
Class : Agaricomycetes
Subclass : insecure position (incertae sedis)
Order : Russulales (Russulales)
Family : Sheepporling relatives (Albatrellaceae)
Genre : Honeycomb truffle
Scientific name
Leucogaster
R. Hesse

The honeycomb truffles ( Leucogaster ) are a genus of mushrooms from the family of sheep pork relatives (Albatrellaceae). The mushrooms have smooth, truffle-like fruit bodies that grow underground and are whitish to yellowish in color. The whitish gleba secretes milk when cut. The more or less rounded and hyaline spores have a double spore wall. The type species is Leucogaster floccosus .

features

Macro features

The 0.7–5 cm high and 0.7–5 cm wide fruit bodies are truffle-like to spherical in shape and have a soft to firm and sometimes hard consistency. The gleba has a honeycomb structure and is whitish or yellowish to ocher yellow in color. When injured, it excretes a milky juice. The outer surface is smooth and whitish to yellowish or pale ocher to brown in color. The fruiting body sometimes turns yellow when touched. The smell is strongly yeast-like or garlic-like.

Micro features

The 10–18 µm long and equally wide spores are more or less spherical and have a honeycomb structure. They are surrounded by a double wall or outer shell, an apiculus is missing. The spores are hyaline and inamyloid . The basidia are up to 50 µm long. They are club-shaped, cylindrical or contracted and usually carry four sterigms . Cystidia are absent. The hyphae system is monomitic , that is, there is only one type of hyphae, buckles are absent or rare.

Ecology and diffusion

The fungus is an ecto mycorrhizal fungus that grows more or less underground ( hypogean ) in the soil or in the leaves and needles. Representatives of the genus have been found in Europe, North America and Australia. There are around 20 species worldwide. In Germany, Austria and Switzerland only Leucogaster badius and the naked honeycomb truffle ( Leucogaster nudus ) occur, in southern Europe you can also find Leucogaster liosporus and Leucogaster tozzianus .

Systematics

The genus Leucogaster was defined in 1882 by R. Hesse. The type species is Leucogaster .

species

The genus has over 20 species worldwide. In Germany, Austria and Switzerland, there are up to four species, depending on the opinion.

Scientific name German name
Leucogaster badius
Mattir. 1903 		––
Leucogaster liosporus
R. Hesse 1882 		––
Leucogaster nudus
(Hazsl.) Hollós 1908 		Naked honeycomb truffle
Leucogaster tozzianus
(Cavara & Sacc.) Mattir. ex Zeller & CW Dodge 1924 		––

swell

Individual evidence

  1. ↑ a b c d Leucogaster. In: MycoBank.org. International Mycological Association, accessed February 19, 2013 .
  2. ↑ a b c Jens H. Petersen & Thomas Læssøe: bout the genus Leucogaster. In: MycoKey. Retrieved February 22, 2013 .
  3. ↑ Leucogaster. R. Hesse, Jb. Wiss. Bot. 13 (2): 189 (1882). In: CABI databases: speciesfungorum.org. Retrieved February 20, 2013 .
  4. ^ Index Fungorum - Search Page. In: indexfungorum.org. Retrieved March 10, 2013 .

Web links

Commons : Honeycomb Truffle ( Leucogaster )  - Collection of images, videos and audio files