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| calyx and corolla are both 5-lobed | Cynanchum racemosum is a twining vine to 3m long |
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| leaves opposite | typical of most members of the Asclepiadaceae, this plant has milky sap |
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| inflorescences are axillary and in racemes | a young inflorescence |
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| another photo showing the habit | compare this plant to its sister, Cynanchum barbigerum |