Photo by Leslie Eguchi Antelopehorn Milkweed Flower Photo by Leslie Eguchi Antelopehorn Milkweed Head Photo by Leslie Eguchi Antelopehorn Milkweed Stem Photo by Leslie Eguchi Antelopehorn Milkweed Plant


Wildflowers of Southern Arizona


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Antelopehorn Milkweed.
Asclepias asperula.
Dogbane (Apocynaceae) family.

The flowers are tightly clustered in rounded, up to 3 inch (7.6 cm) wide umbels. The individual flowers have 5 upcurved, point-tipped, green petals and 5 spreading and upcurved, magenta and white hoods. The flowers are followed by erect, green and maroon-tinged, narrowly teardrop-shaped, up to 4 inch (10 cm) long follicles (fruit). The leaves are green, finely haired, alternate or irregularly grouped, narrowly lance-shaped, and up to 8 inches (20 cm) long. The stems are upright or sprawling, unbranched, and covered with fine, short hairs. The plants ooze milky white sap if damaged.

Santa Catalina Mountains.
Oracle State Park.
Location: Nature Loop Trail.
4/16/17

See SEINet Pictures and Description

See FireFly Forest Pictures and Description

Thumb: Pineleaf Milkweed
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Thumb: Mahogany Milkweed
M. Milkweed »