About
Polyporus umbellatus, commonly known by its traditional Chinese name Zhu Ling, is a rare, medicinal mushroom valued for its diuretic, anti-inflammatory, and immune-boosting properties. It forms dense, umbrella-like clusters at the base of hardwood trees and has been used for thousands of years in Traditional Chinese Medicine (TCM) to promote urination, detoxify the body, and support kidney health.
History
Zhu Ling has been documented in Chinese pharmacopeias for over 2,000 years, especially in texts like the Shennong Ben Cao Jing, one of the oldest herbal compendiums. It was historically prescribed for urinary tract infections, edema, and to strengthen the spleen and kidneys.
Modern studies have identified polysaccharides and other bioactive compounds in P. umbellatus with immunomodulating, anticancer, and hepatoprotective effects. While not widely consumed as a culinary mushroom due to its fibrous texture, it remains a prominent ingredient in TCM formulas and supplements.
Overview
The fruiting body consists of numerous small, whitish caps (1–3 cm wide) growing from a common base, forming a large, branching structure. It grows underground or at the base of trees, particularly oak, and fruits in late spring through autumn. The mushroom itself is tough and fibrous, but the mycelium and extracts are used medicinally.
Zhu Ling is usually consumed in the form of decoctions, capsules, or powdered extracts. It is known for supporting kidney function, reducing water retention, and enhancing immune responses. It is often used in combination with other herbs for synergistic therapeutic effects.
Flavors
Mild
Polyporus umbellatus is not particularly known for a strong flavor. When used in culinary dishes, it often takes on the flavors of the ingredients it's cooked with.
Textures
Spongy
Polyporus umbellatus has a spongy texture.
Chewy
Polyporus umbellatus has a chewy texture.
Fragrances
Earthy
Polyporus umbellatus has a natural earthy aroma.
Woody
Given its growth on old tree roots, it can sometimes have a slightly woody scent.
Physical Characteristics
Caps:
Kidney-shaped, up to 8 cm wide. White to grayish.
Gills:
Decurrent, white to yellowish.
Helps With
UTI
Exhibits antibacterial effects against common urinary tract pathogens
Inflammation
Diuretic actions promote excretion of excess fluids and inflammation
Immune System
Stimulates immune cell activity and cytokine production
Medicinal Chemistry
Similar Species
Species: Meripilus giganteus
Edibility: Although not highly toxic, Meripilus giganteus is generally considered inedible due to its tough texture and potential to cause gastrointestinal discomfort in some individuals.
Key Differences: Color: Polyporus umbellatus typically has a white to grayish-brown color with small, rounded caps that form a dense, cauliflower-like structure. In contrast, Meripilus giganteus has larger, fan-shaped caps that start as creamy white or light brown but often darken and blacken as they age. Texture: The texture of Polyporus umbellatus is more delicate and tender, making it suitable for culinary use. Meripilus giganteus has a tougher, more fibrous texture, especially as it matures, and can become quite leathery. Cap Shape and Size: Polyporus umbellatus has small, numerous caps tightly packed together, while Meripilus giganteus has larger, broader caps that are less densely clustered.
Species: Meripilus giganteus
Edibility: Although not highly toxic, Meripilus giganteus is generally considered inedible due to its tough texture and potential to cause gastrointestinal discomfort in some individuals.
Mushroom Ratings
5.0
Based on 2 Reviews
5
★4
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★2
★1
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01/29/2025
Ruth Zota
01/29/2025
Thomas Folbrecht
References
Anti-inflammatory effects of ethanolic extract of Polyporus umbellatus Fries
Ethanolic P. umbellatus extract inhibited nitric oxide & cytokine production in LPS-stimulated macrophages, indicating anti-inflammatory effects.
2015