Alder fool's bag

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Alder fool's bag
Alder Fool's Bag (Taphrina alni)

Alder Fool's Bag ( Taphrina alni )

Systematics
Subdivision : Taphrinomycotina
Class : Taphrinomycetes
Order : Taphrinales
Family : Taphrinaceae
Genre : Taphrina
Type : Alder fool's bag
Scientific name
Taphrina alni
( Berk. & Broome ) Gjaerum

The alder fool 's pocket , also alder usury ( Taphrina alni ) is a tubular mushroom from the order of the Taphrinales . It forms fool's pockets on gray alder and black alder .

features

Macroscopic features

The alder fool's pocket initially grows on the green cover scales of female kittens of various alder species such as the gray alder . The fungus causes hypertrophy , and a tongue-like to lobed bile about 3 cm in size grows , which is popularly known as the fool's pocket. It is hollow on the inside and initially greenish, later bright red, then brown in color with age. Vegetative shoots are rarely attacked by the fungus.

Microscopic features

older gall on alder catkins

The mycelium grows intercellularly below the epidermis , its asci erupt between the epidermal cells without actual fruiting bodies . They are cylindrical, somewhat truncated at the apex, and measure 18–53 × 10–23 micrometers. They always have eight egg-shaped to elliptical spores. They grow to 6–8 × 3.5–6 micrometers in size. Often they already bud in the ascus.

Characteristics on culture media

The fungus grows slowly on yeast - malt - agar , after two weeks the colony is creamy-pink and buttery with a matt, smooth surface. The pink hue becomes more intense as the colony ages.

Occurrence

The alder fool's pocket is widespread in western, northern and central Europe on alders. there is also evidence from North America. It grows in Central Europe from July to September and appears to be most common in the Alps and northern Germany. Their growth is favored by high humidity.

Taxonomy

The alder fool's pocket was first described by Berkeley & Broome as Ascomyces alni in 1876 . In 1966 the species was classified as Taphrina alni by Gjaerum .

Individual evidence

  1. ↑ a b c d Hans E. Laux: The great cosmos mushroom guide . Franckh-Kosmos, 2015, ISBN 978-3-440-15072-6 ( google.de [accessed on July 28, 2017]).
  2. ↑ Kamila Bacigálova, Ksenija Lopandic, Manuel G. Rodrigues, Alvaro Fonseca, Michael Herzberg, Wilhelm Pinsker, and Hansjörg Prillinger: Phenotypic and genotypic identification and phylogenetic charac-terisation of Taphrina fungi on alder. 2003. Mycological Progress 2 (3): 179-196. pdf
  3. ↑ a b c Cletus Kurtzman, JW Fell, Teun Boekhout: The Yeasts: A Taxonomic Study . Elsevier, 2011, ISBN 978-0-08-093127-2 ( google.de [accessed on July 28, 2017]).
  4. ↑ GBIF: Taphrina alni (Berk. & Broome) Gjaerum, 1966 - Checklist View. Retrieved July 28, 2017 (English).
  5. ^ Taphrina alni. Mycobank, accessed July 28, 2017 .

Web links

Commons : Taphrina alni  - collection of images, videos and audio files