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Paddy straw mushrooms
Straw mushrooms, with some still in their veils, while others have opened and reveal the cap inside
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Agaricales
Family:	Pluteaceae
Genus:	Volvariella
Species:	V. volvacea
Binomial name
Volvariella volvacea (Bul.) Singer (1951)
Synonyms
Agaricus volvaceus Bull. (1786) Amanita virgata Pers. (1797) Vaginata virgata Gray (1821) Volvaria volvacea P. Kumm. (1871)

Volvariella volvaceaMycological characteristics
	Gills on hymenium
	Cap is conical or umbonate
	Hymenium is free
	Stipe has a volva
	Spore print is salmon
	Ecology is saprotrophic
	Edibility is choice

Volvariella volvacea (also known as paddy straw mushroom or straw mushroom) is a species of edible mushroom cultivated throughout East and Southeast Asia and used extensively in Asian cuisines. They are often available fresh in Asia, but are more frequently found in canned or dried forms outside their nations of cultivation. Worldwide, straw mushrooms rank third in consumption, although their use in the West is somewhat uncommon and usually confined to use in Oriental cooking.

Cultivation

Straw mushrooms are grown on rice straw beds and are most commonly picked when immature (often labeled "unpeeled"), during their button or egg phase and before the veil ruptures. They are adaptable and take four to five days to mature, and are most successfully grown in subtropical climates with high annual rainfall. No record has been found of their cultivation before the 19th century.

Nutrition

One cup of straw mushrooms is nutritionally dense and contains selenium, Se 27.7 µg (50.36%), sodium, Na 699 mg (46.60%), iron, Fe 2.6 mg (32.50%), copper, Cu 0.242 mg (26.89%), vitamin B₉ (Folate) 69 µg (17.25%), phosphorus, P 111 mg (15.86%), vitamin B₅, pantothenic acid) 0.75 mg (15.00%), protein 6.97 g (13.94%), total dietary fiber 4.5 g (11.84%), and zinc, Zn 1.22 mg (11.09%).

Identification

In their button stage, straw mushrooms resemble poisonous death caps, but can be distinguished by several mycological features, including their pink spore print (spore prints of death caps are white). The two mushrooms have different distributions, with the death cap generally not found where the straw mushroom grows natively, but immigrants, particularly those from Southeast Asia to California and Australia, have been poisoned due to misidentification.

References

1. "Species Fungorum - GSD Species". www.speciesfungorum.org.
2. "Straw Mushrooms".
3. Chang, S. T.; Chang, Shu-ting; Quimio, T. H. (9 January 1982). "Tropical Mushrooms: Biological Nature and Cultivation Methods". Chinese University Press – via Google Books.
4. Hsiung, Deh-Ta (2006). The Chinese Kitchen. London: Kyle Cathie Ltd. pp. 186–87. ISBN 1-85626-702-4.
5. "Straw Mushroom facts and health benefits". Health Benefits Times. 2019-05-30. Retrieved 2019-11-05.
6. "Cultivation, nutrition, biochemicals and enzyme analysis of paddy straw mushroom (Volvariella volvacea)". International Journal of Current Research. Retrieved 2019-11-05.
7. Money NP. (2004). Mr. Bloomfield's Orchard: The Mysterious World of Mushrooms, Molds, and Mycologists. Oxford University Press. p. 153. ISBN 978-0-19-517158-7.
8. Gardiner, Stephanie (3 January 2012). "Two die after eating death cap mushrooms". The Sydney Morning Herald.

External links

• Straw Mushroom
• http://www.indexfungorum.org/Names/SynSpecies.asp?RecordID=307802
• http://www.indexfungorum.org/Names/NamesRecord.asp?RecordID=307802

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