Coastal Ragweed vs Variable Green Toad

Ambrosia hispida compared with Bufotes variabilis

Key Differences

Coastal Ragweed is Least Concern while Variable Green Toad is Vulnerable.

Taxonomic Classification

Rank	Coastal Ragweed	Variable Green Toad
Kingdom	Plantae (พืช)	Animalia (สัตว์)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (สัตว์มีแกนสันหลัง)
Class	Magnoliopsida (พืชใบเลี้ยงคู่)	Amphibia (สัตว์สะเทินน้ำสะเทินบก)
Order	Asterales (อันดับทานตะวัน)	Anura (อันดับกบ)
Family	Asteraceae (Daisy Family)	Bufonidae
Genus	Ambrosia	Bufotes
Species	Ambrosia hispida	Bufotes variabilis

Conservation Status

Coastal Ragweed

LC — Least Concern

Variable Green Toad

VU — Vulnerable

Physical Characteristics

Attribute	Coastal Ragweed	Variable Green Toad
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.

Variable Green Toad

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

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.