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"Poisonous" does not mean deadly. Some manifestations of toxicity are subtle. The dose, as always, determines if a plant is safe source of nutrients or a toxic hazard.

Scientific Name: Asclepias spp.

Common Name: Milkweed

Species Most Often Affected: sheep, cattle, goats

Poisonous Parts: leaves, fruits, stems

Primary Poisons: desglucosyrioside, syrioside

Questions possibly pertaining to Asclepias spp.:

Are these plants, indigenous to S.D., poisonous to humans as well as livestock?

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