Identification, health, Description and identifying characteristics: Pleurotus ostreatus has a white to gray to grayish brown to brown, fan or oyster shaped cap that ranges from 2 to 10 in. It fruits throughout the year under favorable conditions.Pleurotus populinus has a white to pinkish buff to orange gray, fan or oyster shaped cap that ranges from 1 ½ to 8 in. Pleurotus pulmonarius at least occasionally grows on alder (Alnus spp. Do not eat any fungi that has not been properly identified by a qualified professional, some are DEADLY when ingested. north-east United States (zones 4-7), but do grow elsewhere. Common name: P. ostreatus: oyster or pearl oyster mushroom, P. populinus: aspen oyster mushroom, P. pulmonarius: phoenix or Indian oyster mushroom.Description and identifying characteristics:Pleurotus ostreatus has a white to gray to grayish brown to brown, fan or oyster shaped cap that ranges from 2 to 10 in. DMP had the higher K m value (400 mmol), followed by guaiacol (100 mmol), ABTS (46.51 mmole), and (o-dianisidine) (23.52 mmol) with of purified laccases from Pleurotus ostreatus HP-1 (Patel et al., 2014). The Latin pleurotus(sideways) refers to the sideways growth of the stem with respect to the cap, while the Latin ostreatus(and the English common name, oyster) refers to the shape of the cap which resembles the bivalve of the same name. Oyster mushrooms in BC and the Pacific northwest had usually been identified as Pleurotus ostreatus, a species that is difficult to distinguish from P. pulmonarius and P. populinus 6. It is a delicious edible mushroom and is found throughout the north temperate zone, almost always on dead hardwood (angiosperm) trees. Be safe. If that happens, cut out the wood with a knife. They are rarely found on conifers as well. Decurrent gills that are close. 793-94, plates 484, 497.Phillips, Roger (1991, 2005) Mushrooms and Other Fungi of North America, Firefly Books, p. 206.Binion, Denise E., Stephenson, Steven L., Roody, William C., Burdsall Jr., Horold H., Vasilyeva, Larissa N., and Miller Jr., and Orson K. (2008), Macrofungi associated with oaks of Eastern North America, West Virginia University Press, pp. Summer and autumn, or in warmer climates they can be found in winter as well depending on geographic location. The margin ranges from semicircular to lobed and wavy. All edible wild fungi MUST be cooked. I wasn't the only one finding abundant flushes, Instagram was filled with pictures from all over the country. Because some Japanese consumers who had previously compromised livers died after consuming Pleurocybella porrigens, it is recommended that this look-alike be considered potentially dangerous. Pleurotus ostreatus is often viewed as one of the easiest and most cost‐effective mushrooms to cultivate at different commercial and experimental scales. broad by 1 ½ to 5 in. wide. It appears between October and early April across North America, and features a brown cap. If the mushroom is infested with the larvae, it should not be eaten.When you find a manageable oyster log, you can take it home, keep it outdoors in a location protected from sun and wind, and occasionally water when the weather is dry (soaking is best). broad and 1 ½ to 6 in. Oyster Mushrooms are some of the best edible wild mushrooms; they are fairly easy to identify, they are meaty, and they appear in large numbers. Brush off the beetles and check the flesh of the mushroom for beetle larvae. broad and ½ to 21/2 in. It has economic and ecological values and medicinal properties. While we strive to be 100% accurate, it is solely up to the reader to ensure proper plant identification. Occasionally, some tree bark will stick to the top of the cap or to the flesh where cut from the tree. Oysters have been used to neutralize petroleum product spills, break down biological warfare agents, and even to break down disposable diapers! thick. Oysters logs can continue to produce for two to four years.Oyster mushrooms will often quickly consume the wood they’re growing on, so one does not often find oysters for many years on the same tree. Decurrent means that the gills are attached to and run directly down the stem. Take a look at the close up to the right. nutrition, recipes, history, uses & more! Disclaimer: If you harvest, eat or sell mushrooms you find, you are doing so at your own risk. Many also believe that the name is fitting due to a flavor resemblance to oysters. Pleurotus ostreatus is the second most cultivated edible mushroom worldwide after Agaricus bisporus. All Lentinus and Lentinellus species, while shaped like oysters, have jagged gill edges, while oysters have smooth gill edges (one reason why carrying a magnifying loupe is recommended). Oyster Mushroom (Pleurotus ostreatus) Identification, Medicinal Benefits, & More It’s amazing what a little bit of rain and conducive temperatures can do. If the flesh is tough, cut into the oyster further from the attachment points.Oyster mushrooms can be cleaned with a brush. (I'll have more to say about the name later). broad and 1 ½ to 6 in. populinus can be distinguished form the other two species by its buff spore print. It usually grows with hardwoods, but is occasionally found on conifers. Copyright 2019 Midwest American Mycological Information (MAMI); reproduction of any material found on this website without the express written permission of MAMI is forbidden. Grey Oyster Mushroom Identification and Uses. Tips on harvesting: Cut oyster mushrooms off of the trees or logs or stumps they are growing on at the point of attachment to the wood. References:Kuo, Michael (February 2005) Pleurotus ostreatus: The Oyster MushroomMichigan Mushroom Hunters Club, June 2009 Mushroom of the MonthVolk, Tom Fungus of the Month for October 1998. All three species are similar in odor and taste, and have been cooked in the same manner and used in many dishes without any need to distinguish between the species.Ecology/associated hosts: Pleurotus species are saprotrophic, causing a white-rot of the dead or living wood they are growing on. They can be found in forests in sub-tropical and temperate climates. When the oysters grow from the top of a log, there is a thick stalk. Pleurotus ostreatus is widely cultivated around the world and is reported to contain bioactive compounds that can protect health due to their antioxidant properties. Often, many pounds of oyster mushrooms can be collected from a single tree or log. wide. Pleurotus ostreatus is an edible basidiomycete in which there has been increasing biotechnological interest due to its ability to degrade wood (12, 24) and chemicals related to lignin degradation products ().Furthermore, this fungus produces secondary metabolites with pharmaceutical applications (4, 5, 19) and some proteins that may have industrial use (29, 30).