Explore the Enigmatic Eastern Skunk Cabbage: Facts & More

Symplocarpus renifolius Schott, also known as Eastern Skunk Cabbage, or locally referred to as Black Blind Cabbage in Jilin, China, is a unique plant with an inflorescence that remains at a constant temperature of about 22°C for roughly 14 days, even when the surrounding air temperature is around 20°C lower. This type of plant is known as a “thermogenic plant.” The rise in temperature significantly enhances the dispersion of the flower’s odor.

Despite its foul smell, the flower attracts clusters of insects, serving as an ideal “cold-resistant greenhouse.” It grows under mixed or coniferous forests in moist areas below an altitude of 300 meters, often forming large patches in swamps.

It is found in the Heilongjiang, Songhua, and Ussuri river basins in northeastern China, as well as in the Siberian region of Ekhotsk in Russia, central to northern Japan, and North America.

Growth and Distribution

Habitat

The Eastern Skunk Cabbage grows under mixed or coniferous forests in moist areas below an altitude of 300 meters and often forms large patches in swamps.

Distribution

It is found in the Heilongjiang, Songhua, and Ussuri river basins in northeastern China, the Siberian region of Ekhotsk in Russia, central to northern Japan, and North America.

Morphology and Features

The plant has a robust rhizome, sometimes up to 7 cm in thickness. Its leaves grow from the base, with a petiole measuring 10-20 cm, sometimes even longer. The leaf blade is large, 20-40 cm long, and 15-35 cm wide, with a gradually tapering or bluntly rounded tip. The outer scales of the inflorescence stalk are 10-40 cm long.

The inflorescence stalk is 3-20 cm long and 1-1.2 cm thick. The spathe is a dark purple color, decorated with purple lines on the outside, and measures 10-16 cm long, with a diameter of 4-5.5 cm. The spadix is purple and has a diameter of 2.5-3 cm with a 0.5-1 cm long pedicel. It blooms from May to June.

Value and Other Information

Main Value

Skunk Cabbage Seeds

Harvest and Storage: Harvest in summer and dry in the sun.

Characteristics: Spicy taste; slightly bitter; neutral in nature.

Main Functions: Suppress cough, remove phlegm, relieve asthma. Used primarily for bronchitis and coughing and wheezing.

Usage and Dosage: For internal use: make into a decoction, use 9-15g.

Skunk Cabbage Leaves

Harvest and Storage: Harvest in spring and summer. Use fresh or dry in the sun.

Pharmacological Effects: Cardiotonic action: The extract from the above-ground parts of skunk cabbage increases the contraction amplitude of the frog heart by 11%-23%, but does not affect the heart rate, indicating a cardiotonic effect.

Characteristics: Spicy taste; bitter; neutral in nature.

Main Functions: Expel wind and remove dampness. Used for rheumatic pain.

Usage and Dosage: For internal use: use an appropriate amount, mash and apply.

Skunk Cabbage Rhizome

Harvest and Storage: Harvest in summer and autumn, clean, cut into sections, and dry in the sun or use fresh.

Chemical Components: The whole plant contains butyl gallate, calcium oxalate, β-carotene, vitamin A, β-sitosterol, α-amyrin, and β-amyrin.

Pharmacological Actions: The root decoction has sedative, antispasmodic, and expectorant effects.

Characteristics: Spicy taste; bitter; cool in nature.

Main Functions: Relieve the exterior and suppress cough; transform phlegm and relieve asthma. Mainly used for fever, headache, bronchitis, coughing, and wheezing.

Usage and Dosage: For internal use: make into a decoction, use 9-15g.

Toxicology and Toxicity

The whole plant is toxic, and cattle and horses do not eat it. Ingesting a large amount of the root and seeds causes nausea, vomiting, headaches, dizziness, and blurred vision.

Toxicology: The rhizomes and roots have irritating, sialagogic, emetic, antispasmodic, and anesthetic effects; applying leaves externally can reduce swelling. The plant can be eaten after being cooked.