SafePlants

Curtiss' Milkweed (Asclepias curtissii)

Curtiss' Milkweed, scientifically known as Asclepias curtissii, is a rare and fascinating plant species native to Florida. It's also known by its common name, Curtiss' Milkweed.

Considerations for Pets

• This is a milkweed species, and milkweeds, in general, are known to contain substances within their sap that could be a concern if ingested.

Considerations for Children

• This is a milkweed species, and milkweeds, in general, are known to contain substances within their sap that could be a concern if ingested.

Taxonomy and Nomenclature

• Scientific Name: Asclepias curtissii A. Gray
• Family: Asclepiadoideae (subfamily)
• Synonyms:
  • Asclepias aceratoides Nash
  • Oxypteryx curtissii (A. Gray) Small

Distribution and Habitat

• Curtiss' Milkweed is an endemic species, meaning it is found exclusively in Florida.
• It thrives in specific habitats, including:
  • Sandy areas
  • Scrub
  • Sandhills
• Specifically noted to be found in deep, excessively well-drained locations within these habitats.

Ecological Role

• Curtiss' Milkweed serves as a larval host plant for Monarch butterflies.

Morphological Characteristics

• It is a perennial herbaceous plant, meaning it lives for multiple years and has non-woody stems.
• Can reach a height of 2-4 feet and may appear "tall and lanky."
• Leaves are arranged oppositely on the stem and are elliptic to ovate in shape, with short stalks.
• Flowers are white and greenish in color.
• Blooms in the spring.

Quirky Facts

• Curtiss' Milkweed is considered fairly inconspicuous in the landscape.
• The text highlights the importance of studying its ecosystems in the endangered Florida Scrub habitat.

Interactions with Other Organisms

• Gulf Fritillary butterflies are known to land on this milkweed.

Further Information

• USF Herbarium may hold specimen details.
• Discover Life has a page dedicated to the biology, natural history, ecology, identification, and distribution of Asclepias curtissii.