01 n. Any plant of the genera Asclepias and Acerates, abounding in a milky juice, and having its seed attached to a long silky down; silkweed. T…
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1.
Any plant of the genera Asclepias and Acerates, abounding in a milky juice, and having its seed attached to a long silky down; silkweed. The name is also applied to several other plants with a milky juice, as to several kinds of spurge. Its leaves are a favorite food source for the larvae of the monarch butterfly.(Bot.)