''Volvariella'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

mushroom A mushroom or toadstool is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground, on soil, or on its food source. ''Toadstool'' generally denotes one poisonous to humans. The standard for the name "mushroom" is ...

s with deep salmon pink

gills A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...

and

spore print 300px, Making a spore print of the mushroom ''Volvariella volvacea'' shown in composite: (photo lower half) mushroom cap laid on white and dark paper; (photo upper half) cap removed after 24 hours showing pinkish-tan spore print. A 3.5-centimeter ...

Description

They lack a

ring Ring may refer to: * Ring (jewellery), a round band, usually made of metal, worn as ornamental jewelry * To make a sound with a bell, and the sound made by a bell :(hence) to initiate a telephone connection Arts, entertainment and media Film and ...

, and have an Amanita-like volva at the stem base. Some species of

Amanita The genus ''Amanita'' contains about 600 species of agarics, including some of the most toxic known mushrooms found worldwide, as well as some well-regarded edible species. This genus is responsible for approximately 95% of the fatalities resul ...

look similar, but

has white spores and often have a ring. Since the gills of young ''Volvariella'' are white at first, they are more easily mistaken for ''

''. The genus is estimated to contain about 50 species.

Species

Many sources list ''Volvariella'' as a member of the

Pluteaceae The Pluteaceae are a family of small to medium-sized mushrooms which have free gill attachment and pink spores. Members of Pluteaceae can be mistaken for members of Entolomataceae, but can be distinguished by the angled spores and attached gill ...

family, but recent DNA studies have revealed that ''

Pluteus ''Pluteus'' is a large genus of fungi with over 300 species. They are wood rotting saprobes with pink spore prints and gills that are free from the stem. The Latin word ''Pluteus'' means ''shed or penthouse''. Characteristics of the genus ...

'' and ''Volvariella'' evolved separately and have very different DNA. These studies show that ''Volvariella'' is very closely related to "schizophylloid" mushrooms like ''

Schizophyllum commune ''Schizophyllum commune'' is a species of fungus in the genus ''Schizophyllum''. The mushroom resembles undulating waves of tightly packed corals or loose Chinese fan. "Gillies" or "split gills" vary from creamy yellow to pale white in colour. Th ...

''. Some species of ''Volvariella'' are popular edibles in Europe, accounting for 16% of total production of cultivated mushrooms in the world.

Cultivation and edibility

Volvariella volvacea ''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 regions they ...

'', well known as the "paddy straw mushroom", is cultured in rice straw in the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

and

Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainlan ...

. This species also favors wood chip piles. Unfortunately, it is easy to mistake the death cap mushroom (''

Amanita phalloides ''Amanita phalloides'' (), commonly known as the death cap, is a deadly poisonous basidiomycete fungus, one of many in the genus ''Amanita''. Widely distributed across Europe, but now sprouting in other parts of the world, ''A. phalloides ...

''), as well as some other ''

'' species, for this edible species due to similarities in appearance. This mistake is the leading cause of lethal mushroom poisoning in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

. ''Volvariella'' and ''Amanita'' cannot be distinguished in the early "button stage", that, for many, is considered the best stage to collect ''Volvariella'' for consumption. Like ''Amanita'', the paddy straw mushroom has a ''volva'', or

universal veil In mycology, a universal veil is a temporary membranous tissue that fully envelops immature fruiting bodies of certain gilled mushrooms. The developing Caesar's mushroom (''Amanita caesarea''), for example, which may resemble a small white sphe ...

, so called because it is a membrane that encapsulates the entire mushroom when it is young. This structure breaks apart as the mushroom expands, leaving parts that can be found at the base of the stalk as a cup-like structure.

List of species

References

* Key to the genus Volvariell

Pluteaceae Edible fungi Agaricales genera Taxa named by Carlo Luigi Spegazzini {{Agaricales-stub