dogbane vs. milkweed

any of several plants of the genus Apocynum, especially A. androsaemifolium, yielding an acrid milky juice and having an intensely bitter root.

any of several plants that secrete a milky juice or latex, especially those of the genus Asclepias, as A. syriaca. Compare milkweed family.

any of various other plants having a milky juice, as certain spurges.