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(The Dogbane Family)
This family consists or creeping vines or perennial herbs with simple leaves that can be alternate, whorled or opposite. Most plants have a milky white sap. The flowers are 5-merous and usually the petals are fused to form a bell or tube shape. Included in this family are the genera that formerly were placed in the Asclepidaceae, or milkweed family.
Plants in Family: