Canadian dogbane yielding a tough fiber used as cordage by native Americans; used in folk medicine for pain or inflammation in joints
同义词：Indian hemp??/??Apocynum cannabinum
North American perennial having pinkish flowers in loose cymes; used in folk medicine for pain or inflammation in joints
同义词：common dogbane??/??spreading dogbane??/??Apocynum androsaemifolium
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