ETYM Said to be poisonous to dogs. Related to Apocynaceous.
Any of several poisonous perennial plants of the genus Apocynum having acrid milky juice and bll-shaped white or pink flowers and a very bitter root.
Any sometimes poisonous herbaceous North American plant of the genus Apocynum, with opposite leaves, small white or pink flowers, and milky juice.
The term also is used to designate any member of the dogbane family Apocynaceae, which includes various herbaceous plants, shrubs, and trees such as oleander and periwinkle.