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Asclepias linaria facts for kids

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Asclepias linaria
Asclepias linaria.jpg
Scientific classification

Asclepias linaria is a species of milkweed known by the common name pineneedle milkweed.

It is native to the Mojave and Sonoran Deserts of Northwestern Mexico and the U.S. states of California and Arizona.

This is a large erect perennial herb or shrub coated in hairs and many narrow, green leaves which resemble pine needles. The inflorescence is an umbel-like cluster of flowers, each with pink-tinted rounded hoods at the center and greenish reflexed corollas. The fruit is a follicle.

Research indicates that the very high cardenolide content of this species reduces the impact of the OE parasite, Ophryocystis elektroscirrha, on the monarch butterfly, Danaus plexippus. By contrast, some species of Asclepias are extremely poor sources of cardenolides.

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