Asclepias fascicularis is a species of milkweed known by the common names narrowleaf milkweed and Mexican whorled milkweed.
The plant is a common perennial in the Western United States and Baja California. It is found in numerous habitats, including deserts, chaparral and woodlands, and montane locales below 7,000 feet (2,100 m).
Asclepias fascicularis is a flowering perennial sending up many thin, erect stems and bearing distinctive long pointed leaves which are very narrow and often whorled about the stem, giving the plant its common names.
It blooms in clusters of lavender, pale pink, purple, white, to greenish shades of flowers. They have five reflexed lobes that extend down away from the blossom.
The fruit pods are the smooth milkweed type, which split open to spill seeds along with plentiful silky hairs. They bloom from late spring to late summer.
Asclepias fascicularis is cultivated by specialty nurseries as an ornamental plant. It is used in butterfly and wildlife gardens, and in native plant and drought tolerant gardens and natural landscaping projects.
- Calflora Database: Asclepias fascicularis (narrow leaf milkweed, Mexican whorled milkweed)
- USDA Plants Profile of Asclepias fascicularis (Mexican whorled milkweed)
- Jepson Manual Treatment of Asclepias fascicularis
- YouTube: Asclepias fascicularis in Santa Barbara, California
- Asclepias fascicularis - UC Photos gallery
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