arctic-alpine fleabane vs Coastal Ragweed

Erigeron humilis compared with Ambrosia hispida

Key Differences

• arctic-alpine fleabane is Near Threatened while Coastal Ragweed is Least Concern.

Taxonomic Classification

Rank	arctic-alpine fleabane	Coastal Ragweed
Kingdom same	Plantae (نباتات)	Plantae (نباتات)
Phylum same	Magnoliophyta (كاسيات البذور)	Magnoliophyta (كاسيات البذور)
Class same	Magnoliopsida (ماغنولانية)	Magnoliopsida (ماغنولانية)
Order same	Asterales (نجميات)	Asterales (نجميات)
Family same	Asteraceae (Daisy Family)	Asteraceae (Daisy Family)
Genus	Erigeron	Ambrosia
Species	Erigeron humilis	Ambrosia hispida

Evolutionary Relationship

arctic-alpine fleabane and Coastal Ragweed share a common ancestor at the Family level: Asteraceae. (Daisy Family)

Conservation Status

arctic-alpine fleabane

NT — Near Threatened

Coastal Ragweed

LC — Least Concern

Physical Characteristics

Attribute	arctic-alpine fleabane	Coastal Ragweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

arctic-alpine fleabane

Habitat

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

Range

Distributed across Canada, Finland, Iceland, Norway, and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Coastal Ragweed

Habitat

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

Range

Found in Cuba.

arctic-alpine fleabane

The Arctic-alpine fleabane (Erigeron humilis) is a species in the genus Erigeron. It is currently classified as Near Threatened on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.