IUCN threat status:

Not evaluated

Comprehensive Description

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Comments

The flowers of Purple Milkweed are quite attractive. This species is less aggressive than Asclepias syriaca (Common Milkweed), which it resembles somewhat in appearance. However, the flowers of Purple Milkweed are usually a deeper color of purple and more likely to occur in terminal umbels at the apex of the central stem, rather than as axillary umbels between the upper leaves. The seedpods of Purple Milkweed are smooth, while the seedpods of Common Milkweed have soft prickles. Purple Milkweed also resembles Asclepias rubra (Red Milkweed), but the horns on the flowers of the latter species are straight and about as tall as the hoods, while the horns of Purple Milkweed are shorter than the hoods and curve inward toward the reproductive column of the flowers. Return

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© John Hilty

Source: Illinois Wildflowers

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