NameThatPlant.net: Vincetoxicum nigrum

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Gentianales

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Vincetoxicum nigrum FAMILY Apocynaceae Go to FSUS key

Dig deeper at SERNEC, a consortium of southeastern herbaria.

Check out EDDMapS.org to see where this has been reported.

Read more about Black Swallow-wort at Vascular Plants of North Carolina.

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Cynanchum louiseae FAMILY Asclepiadaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)

Cynanchum louiseae

SYNONYMOUS WITH Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)

Vincetoxicum nigrum

SYNONYMOUS WITH Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)

Cynanchum nigrum

COMMON NAME:
Black Swallow-wort, Dog-Strangling Vine

To see larger pictures, click or hover over the thumbnails.

image of Vincetoxicum nigrum, Black Swallow-wort, Dog-Strangling Vine

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_cyni_001_lvd

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Vincetoxicum nigrum FAMILY Apocynaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Cynanchum louiseae FAMILY Asclepiadaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Cynanchum louiseae

SYNONYMOUS WITH Manual of Vascular Plants of NE US & Adjacent Canada (Gleason & Cronquist,1991)
Vincetoxicum nigrum

SYNONYMOUS WITH Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Cynanchum nigrum

4163

Woody vine
Perennial

Habitat: Disturbed areas, per Weakley's Flora

Non-native: Mediterranean Europe

map
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.

Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)

Invasive?

This plant may be causing problems in natural areas outside its native range, according to authorities such as:

Forest Health Assessment & Applied Sciences Team: New Invaders of the Southeast

DOES THE PLANT HAVE "MILKY SAP"?
Has milky sap (latex)

LEAVES:
Simple
Opposite

FLOWER:
Spring/Summer
Dark purple, almost black
Radially symmetrical
5-lobed corolla
Superior ovary

FRUIT:

TO LEARN MORE about this plant, look it up in a good book!