Pale Swallow-wort |
Pale Swallow-wort |
Cynanchum rossicum or Vincetoxicum rossicum |
Milkweed Family - Asclepiadaceae |
An invasive species introduced from Europe in the last century. Grows as an erect
plant (3 to 5 feet tall) or as a vine encircling and growing over native plants.
Flowers, in loose clusters, are reddish purple with 5 petals that are twice
as long as broad and without short hairs (contrast with the shorter, thicker and
hairy blackish to dark purple petals of Black Swallow-wort (Vincetoxicum nigrum
or louiseae)). Leaves opposite, entire and oval in shape with a short stalk.
Photographed - late June at Ottawa |
� Pathology Images Inc. 2002 2003 |