Invasive Dog-strangline Vine under Sumac

Invasive Dog-strangline Vine under Sumac

0512_RE_0976

Dog-strangling vine or Black swallow-wort (Cynanchum louiseae also known as Cynanchum nigrum or Vincetoxicum nigrum) has taken a major hold under the sumac in Cudia Park in the Scarborough Bluffs along Lake Ontario in Toronto, Ontario - the monarch butterfly may lay its eggs on this member of the milkweed family but its young will not survive

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