Cyclocybe parasitica

Cyclocybe parasitica
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Tubariaceae
Genus: Cyclocybe
Species:
C. parasitica
Binomial name
Cyclocybe parasitica
(G.Stev.) Vizzini (2014)
Synonyms[1]
  • Agrocybe parasitica G.Stev. (1982)
Cyclocybe parasitica
Mycological characteristics
Gills on hymenium
Cap is convex
Hymenium is adnate
Stipe has a ring
Spore print is blackish-brown
Ecology is parasitic
Edibility is edible

Cyclocybe parasitica, also known as tawaka in Māori language or poplar mushroom,[2][3] is a species of gilled mushroom in the genus Cyclocybe found in Australasia.

Description

The cap is centrally attached, buff coloured, and darker at center. The stem is pale with white flesh. The partial veil presses against the pink-to-dark gills[4] and turns into a prominent ring, often striated with dark brown spore deposit upon the stem expansion. The spores are cylindrical and thick walled with a prominent germ pore.[1]

Similar species

It resembles the more orange-coloured Gymnopilus junonius.[4]

Distribution and habitat

The species is found mostly in New Zealand and Australia, from November to June.[4] It grows on native and introduced trees where it can cause heart rot, and does not seem to be associated with conifers.[1][5]

Ecology

The species grows parasitically and saprotrophically in hardwood trees such as Beilschmiedia tawa, Hoheria or Plagianthus but can also be found on Nothofagus, birches or poplars. It is native and probably indigenous to New Zealand. Fruiting bodies usually occur in late summer and autumn, sometimes single but usually in clusters.[6]

Uses

Tawaka is an edible mushroom with a meaty savoury taste. It can be collected in the wild or cultivated on logs that are inoculated four to eight weeks after cutting and defoliating. According to a study from Lincoln University in 1990, tawaka contains approximately 20% protein in dry mass, which is roughly half of what can be found in the common button mushroom, while the essential amino acid composition is similar. On the other hand, available carbohydrate content is almost three times higher.[7]

Tawaka was historically used by Māori people as a traditional medicine.[2]

References

  1. ^ a b c Stevenson, Greta (1982). "A parasitic member of the Bolbitiaceae, Agrocybe parasitica sp. nov". New Zealand Journal of Forestry. 27: 130–133.
  2. ^ a b "Mātauranga Māori: Fungi as food and medicine". The University of Waikato Te Whare Wananga o Waikato. Retrieved 8 May 2020.
  3. ^ Sisson, Viv (2023). Fungi of Aotearoa : a curious forager's field guide. Auckland, New Zealand: Penguin Random House New Zealand. ISBN 9781761047879.
  4. ^ a b c Langlands, Peter (2024). Foraging New Zealand. Penguin. ISBN 978-1-77695-104-8.
  5. ^ "Agrocybe parasitica native heart-rot fungus of hardwoods". New Zealand Farm Forestry Association. Retrieved 8 May 2020.
  6. ^ McKenzie, E. H. C.; Buchanan, P. K.; Johnston, P. R. (2000). "Checklist of fungi on Nothofagus species in New Zealand". New Zealand Journal of Botany. 38 (4): 635–720. Bibcode:2000NZJB...38..635M. doi:10.1080/0028825X.2000.9512711. S2CID 84975377.
  7. ^ Mitchell, A.; Savage, G.P. (1990). "Agrocybe parasitica: The mushroom of future?". Proceedings of the Nutrition Society of New Zealand. 15: 175–178.
  • Media related to Cyclocybe parasitica at Wikimedia Commons
  • Agrocybe parasitica on the T.E.R.R.A.I.N site