Manchurian Dutchmanspipe (Aristolochia manshuriensis) — identification, habitat & look-alikes

Manchurian Dutchmanspipe is a woody vine native to East Asian forests. Its large, heart-shaped leaves partly hide curved, tube-shaped flowers with broad openings. Its stems contain toxic compounds linked to severe kidney damage and cancer.

Appearance

Growth form: This woody vine loses its leaves each year and can climb to about 30 ft (10 m).
Leaves: The heart-shaped leaves can reach about 6–12 in (15–29 cm) long and may have soft hairs.
Flowers: A curved tube opens into a broad, three-lobed flower mouth, often partly hidden by the leaves.
Fruit: Its long, dry fruits split open when ripe, releasing the seeds.

Look-alikes

Dutchman's pipeAristolochia macrophylla

The eastern U.S. Dutchman’s pipe has a smaller flower opening, often about ½–¾ in (1–2 cm) across. Manchurian Dutchmanspipe has a broad flower mouth about 1½–2½ in (4–6 cm) across; a flower photo is more reliable than a leaf photo.

Why they get mixed upBoth are woody vines with heart-shaped leaves and bent flowers.

Where it lives

Typical habitats: Temperate forests
Range: It is native to Korea, parts of China, and the Russian Far East.
Preferred conditions: In its native range, it grows as a woody climber in forests.

Cautions

Cautions: Its stems contain , chemicals linked to severe kidney damage and cancer.

Name and classification

About the name: Some botanical writing places this species in Isotrema and calls it Isotrema manshuriense.

Conservation

IUCN Red List: NENot EvaluatedNot yet assessed

Culture and stories

Culture and stories: Its dried stem has been called guan mu tong in traditional medicine, but its toxic compounds make ingestion dangerous.

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