Amami Pine vs Coastal Ragweed

Pinus amamiana compared with Ambrosia hispida

Key Differences

• Amami Pine is Endangered while Coastal Ragweed is Least Concern.

Taxonomic Classification

Rank	Amami Pine	Coastal Ragweed
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum	Coniferophyta (Conifers)	Magnoliophyta (Flowering Plants)
Class	Pinopsida (Conifers)	Magnoliopsida (Dicots)
Order	Pinales (Pines & Allies)	Asterales (Daisies & Sunflowers)
Family	Pinaceae (Pine Family)	Asteraceae (Daisy Family)
Genus	Pinus (Pines)	Ambrosia
Species	Pinus amamiana	Ambrosia hispida

Evolutionary Relationship

Amami Pine and Coastal Ragweed share a common ancestor at the Kingdom level: Plantae. (Plants)

Conservation Status

Amami Pine

EN — Endangered

Coastal Ragweed

LC — Least Concern

Physical Characteristics

Attribute	Amami Pine	Coastal Ragweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amami Pine

Habitat

Typically found in temperate and boreal forests, often at higher elevations.

Coastal Ragweed

Habitat

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

Range

Found in Cuba.

Amami Pine

The Amami Pine (Pinus amamiana) is a species in the genus Pinus. It is currently classified as Endangered on the IUCN Red List. Typically found in temperate and boreal forests, often at higher elevations.

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.