Farlow ex Murrill (1922)
|gills on hymenium|
cap is convexor flat
|hymenium is adnate|
|stipe has a ring|
|spore print is purple|
|ecology is saprotrophic|
Stropharia rugosoannulata, commonly known as the wine cap stropharia, "garden giant", burgundy mushroom or king stropharia (Japanese: saketsubatake), is an agaric of the family Strophariaceae found in Europe and North America, and introduced to Australia and New Zealand.
The king stropharia can grow to 20 cm high with a reddish-brown convex to flattening cap up to 30 cm across, the size leading to another colloquial name godzilla mushroom. The gills are initially pale, then grey, and finally dark purple-brown in colour. The firm flesh is white, as is the tall stem which bears a wrinkled ring. This is the origin of the specific epithet which means "wrinkled-ringed".
It is found on wood chips and bark mulch across North America in summer and autumn. Described as very tasty by some authors, king stropharia is easily cultivated on a medium similar to that on which it grows naturally. Antonio Carluccio recommends sautéeing them in butter or grilling them.
In Paul Stamets' book Mycelium Running, a study done by Christiane Pischl showed that the king stropharia makes an excellent garden companion to corn. The fungus also has a European history of being grown with corn.
A 2006 study, published in the journal Applied and Environmental Microbiology, found the king stropharia to have the ability to attack the nematode Panagrellus redivivus; the fungus produces unique spiny cells called acanthocytes which are able to immobilise and digest the nematodes. See nematophagous fungus.
- "Stropharia rugosoannulata Farl. ex Murrill 1922". MycoBank. International Mycological Association. Retrieved 2011-09-11.
- Carluccio A (2003). The Complete Mushroom Book. Quadrille. ISBN 1-84400-040-0.
- Pacioni G (1981). Simon & Schusters Guide to Mushrooms. Simon & Schuster. ISBN 0-671-42849-7.
- Hong Luo; Xuan Li; Guohong Li; Yanbo Pan & Keqin Zhang (2006). "Acanthocytes of Stropharia rugosoannulata Function as a Nematode-Attacking Device". Appl. Environ. Microbiol. 72 (4): 2982–7. PMC . PMID 16598005. doi:10.1128/AEM.72.4.2982-2987.2006.