- Indian hemp, rheumatism weed, Apocynum cannabinum - Canadian dogbane yielding a tough fiber used as cordage by native Americans; used in folk medicine for pain or inflammation in joints
--1 is a kind of dogbane
- common dogbane, spreading dogbane, rheumatism weed, Apocynum androsaemifolium - North American perennial having pinkish flowers in loose cymes; used in folk medicine for pain or inflammation in joints
--2 is a kind of dogbane