Asclepias curtissii, commonly called Curtiss's milkweed, is a species-level species of milkweed plant that is native to the U.S. state of Florida. Like other milkweeds it exudes a milky sap when cut, produces clusters of distinctive star-shaped flowers, and develops seed pods (follicles) that release silky-haired seeds for wind dispersal.
Characteristics
Key features of Curtiss's milkweed include opposite leaves, an herbaceous growth habit, and umbels of small flowers typical of the genus. The flowers and nectar attract a variety of pollinators. Fruits are dry follicles that split open to release seeds adapted for airborne travel.
- Growth form: herbaceous perennial (milkweed-type habit)
- Flowers: clustered, milkweed-typical structure
- Seeds: comose (silky hairs) for wind dispersal
Habitat and distribution
This species has a limited geographic range within Florida and is associated with well-drained, sandy soils such as scrub, open pine flatwoods, and coastal habitats. Its restricted distribution makes local habitat condition important to its persistence.
Ecology and uses
As a member of the milkweed group, Asclepias curtissii provides nectar for bees, butterflies and other insects, and may serve as a larval host for specialist lepidopterans. Gardeners interested in native-plant landscaping sometimes include milkweeds to support pollinators and native biodiversity.
Conservation and cultivation
Because of its narrow range and habitat sensitivity, populations can be vulnerable to development, fire suppression, and invasive plants. Conservation actions typically emphasize protecting native sandy habitats, using appropriate fire regimes, and including local native stock in restoration plantings. Cultivation advice follows general milkweed practices: full sun, well-drained soil, and propagation by seed or cuttings.
Taxonomy and historical note
Asclepias curtissii belongs to the subfamily Asclepiadoideae, which was formerly treated as the separate family Asclepiadaceae but is now placed within Apocynaceae. The common name commemorates the 19th-century collector and botanist after whom the species was named. For further general information on milkweeds and related species see additional resources: species overview, milkweed information, and regional plant guides (plant resources, taxonomic notes, Florida flora).