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Pale Swallowwort

Cynanchum rossicum


A twining vine that grows to heights of 60–200 cm. The glossy, dark green leaves grow opposite on the stem and are ovate to elliptical. The flowers appear near the top of the plant and grow on stalks that come from the leaf axils. Each stalk has 5 to 20 flowers. The flowers are dark purple or dark brown. After a year of growth, the stem turns light brown and resembles a decaying stem and stops growing, yet it remains to cling onto the plant. The plant spreads its seeds by wind dispersal.

1 species ID suggestions


CourtneyVerk 6 years ago

ID updated thank you MitchTroop2.

dandoucette 6 years ago

I'm not sure what this is but Tylophora and glassy tiger are tropical species not found in Canada. Some more shots of the plant, like the leaves and how and what it was growing on might help for ID.

If this is a vine, it might be a Tylophora ovata or related plants. Its a hostplant of several butterfly species like Glassy tiger and Large tree nymph .

CourtneyVerk 6 years ago

Can anyone help with this ID?

Ontario, Canada

Lat: 43.84, Long: -79.63

Spotted on Jun 10, 2012
Submitted on Jun 22, 2012


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