Other common names:
Dog Strangling Vine, European Swallowwort, Russian Swallowwort Other scientific names: Cynanchum medium, Vincetoxicum medium, Vincetoxicum rossicum Family: Dogbane Family (Apocynaceae), (Milkweed Family (Asclepiadaceae)) Group: Swallowworts Distinctive features:
Opposite leaves on a vine, milkweed-like seed pods and seeds. Similar species: • Black Swallowwort (Cynanchum louiseae) • White Swallowwort (Cynanchum vincetoxicum) Flowers: Summer; Green/Brown; 5 parts (petals); 5-petals, purple/brown, petals smooth, 1/4" wide, late spring & summer. Leaves:
Opposite pairs, sometimes in a whorl, egg-shaped. Height:
Vine, 2-6 feet long. Stem:
Vine. Fruit/Seeds:
In a pod closely resembling those of milkweed. but smaller. Habitat: Fields and Open Areas; Open areas, forest edges. Native/Non-native:
Non-native Status:
Common.
Notes: Swallowworts are highly invasive alien plants, that will aggressively take over an area once they get a chance. Pull them up before they get a foothold.
For more information visit: Ontario Wildflowers Photographs:
68 photographs available, of which 13 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.
Range Map is at the bottom of the page
PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.
(Range map provided courtesy of the USDA website
and is displayed here in accordance with their
Policies)
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