Photographer: Kitty Kohout
Vincetoxicum nigrum (L.) Moench
Vincetoxicum: from vincere for "to conquer" and toxicum for "poison," referring to original species of Cynanchum (genus in same family) supposed curative powers
nigrum: Latin for "black"
Prohibited/Restricted Invasive - Eradicate!
|Status: ||Introduced - locally established; ecologically invasive|
|Plant: ||climbing, perennial, 3'-6' tall, herbaceous vine in dense, tangling, thickets; stems hairy; roots a dense, knobby mass|
|Flower: ||purple-black to dark red, 5-parted, 1/4" wide, the petals triangular, fleshy, with tiny hairs on the top; inflorescence with mostly 6-10 flowers in umbel-like, stalked, branched cluster (cyme); blooms May-Aug.|
|Fruit:||long narrow, thin pods with many seeds on silky hairs|
|Leaf:||2"-5" long, opposite, toothless, oval to heart-shaped with a pointed tip, dark green, smooth, shiny, short-stalked|
|Habitat: ||full to partial sun; uplands, disturbed sites, woods edge|
|Notes: ||to eradicate: remove and burn all pods; treat growing foliage with surfactant mixed with triclopyr or glyohosate; monitor in late fall|