Rheumatism Weed
n. 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 hempApocynum cannabinum
North American perennial having pinkish flowers in loose cymes; used in folk medicine for pain or inflammation in joints 同义词：common dogbanespreading dogbaneApocynum androsaemifolium