Coastal Ragweed vs intermediate oak fern

Ambrosia hispida compared with Gymnocarpium intermedium

Key Differences

• Coastal Ragweed is Least Concern while intermediate oak fern is Not Evaluated.

Taxonomic Classification

Rank	Coastal Ragweed	intermediate oak fern
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Magnoliophyta (Flowering Plants)	Tracheophyta
Class	Magnoliopsida (Dicots)	Polypodiopsida (Polypodiopsida)
Order	Asterales (Daisies & Sunflowers)	Polypodiales (Polypodiales)
Family	Asteraceae (Daisy Family)	Cystopteridaceae
Genus	Ambrosia	Gymnocarpium
Species	Ambrosia hispida	Gymnocarpium intermedium

Evolutionary Relationship

Coastal Ragweed and intermediate oak fern share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Coastal Ragweed

LC — Least Concern

intermediate oak fern

NE — Not Evaluated

Physical Characteristics

Attribute	Coastal Ragweed	intermediate oak fern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Coastal Ragweed

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Found in Cuba.

intermediate oak fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Canada and Norway.

Coastal Ragweed

Coastal ragweed (Ambrosia hispida) is a perennial herb in the family Asteraceae, native to the coastal dunes, sandy beaches, and cays of Cuba, the Bahamas, and the wider Caribbean region. It grows in pioneer beach and dune vegetation, often forming spreading colonies that help stabilise loose coastal sands. Like other members of the genus Ambrosia, it bears inconspicuous greenish-white flowers arranged in racemes; male flower heads produce wind-dispersed pollen that can trigger allergic rhinitis in sensitive individuals. The deeply lobed, hispid leaves are adapted to reflect intense solar radiation and tolerate salt spray. Coastal ragweed plays an ecological role in early dune succession, binding sand and enabling other plant species to establish. The genus is widespread globally, with several Ambrosia species considered noxious weeds in agricultural settings, though Ambrosia hispida is restricted to its native Caribbean coastal range. The IUCN assesses it as Least Concern, reflecting adequate population size across its Caribbean coastal distribution. Pressure from coastal development and tourism infrastructure poses a localised threat to dune communities it inhabits.