Hypsizygus tessulatus

Hypsizygus tessulatus, commonly known as the Beech Mushroom or Shimeji, is a species of edible fungus belonging to the family Lyophyllaceae. It is native to East Asia but has been cultivated in many other parts of the world due to its popularity in culinary applications. This mushroom grows naturally on living or dead wood of beech trees, hence its common name. It is characterized by its small to medium-sized fruiting bodies with convex to broadly convex caps that are smooth and often possess a tessellated pattern, from which its scientific name is derived.

Description

Hypsizygus tessulatus features a cap that is typically 5 to 10 cm in diameter, initially convex before flattening out with age. The cap surface is smooth, with a white to light brown coloration, often exhibiting a fine, tessellated pattern. The gills are white, crowded, and attached to a stem that can be 4 to 10 cm tall and 1 to 2 cm thick, usually white and fibrous.

The spore print of Hypsizygus tessulatus is white, with spores being ellipsoid in shape and non-amyloid. This mushroom does not have a distinctive smell but is known for its pleasant, slightly nutty flavor when cooked.

Habitat and Distribution

Originally found in East Asia, particularly in Japan, China, and Korea, Hypsizygus tessulatus grows in groups or clusters on living or dead wood of beech trees and occasionally on other hardwoods. Due to its desirability as a culinary mushroom, it has been cultivated in various parts of the world, including North America and Europe.

Culinary Uses

Hypsizygus tessulatus is highly regarded in the culinary world, especially in Japanese cuisine, where it is known as Shimeji. It must be cooked before consumption, as it can be slightly bitter when raw. Cooking transforms its flavor into a rich, umami taste, making it a popular ingredient in soups, stir-fries, and other dishes. It is often used in combination with other vegetables and meats, absorbing flavors while contributing its unique texture and taste.

Cultivation

The cultivation of Hypsizygus tessulatus involves growing the mushrooms on substrates such as sawdust, grain, or straw that has been inoculated with its mycelium. The process requires controlled environmental conditions, including temperature, humidity, and light, to mimic its natural habitat and encourage growth. The mushrooms are typically ready for harvest within a few weeks of inoculation.

Nutritional and Medicinal Properties

While Hypsizygus tessulatus is primarily consumed for its taste and texture, it also offers nutritional benefits. It is a source of protein, fiber, and various vitamins and minerals. Additionally, like many mushrooms, it contains compounds that have been studied for their potential health benefits, including immune system support and anti-inflammatory properties.

See Also

• Edible mushroom
• Mushroom cultivation
• Mycology