Coastal Ragweed vs

Ambrosia hispida compared with Pyrenula nitida

Key Differences

• Coastal Ragweed is Least Concern while is Endangered.

Taxonomic Classification

Rank	Coastal Ragweed
Kingdom	Plantae (식물)	Fungi (균계)
Phylum	Magnoliophyta (피자식물문)	Ascomycota (자낭균류)
Class	Magnoliopsida (목련강)	Eurotiomycetes (흰가시동충하초강)
Order	Asterales (국화목)	Pyrenulales (Pyrenulales)
Family	Asteraceae (Daisy Family)	Pyrenulaceae
Genus	Ambrosia	Pyrenula
Species	Ambrosia hispida	Pyrenula nitida

Conservation Status

Coastal Ragweed

LC — Least Concern

EN — Endangered

Physical Characteristics

Attribute	Coastal Ragweed
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.

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, Sweden, and United States. Currently classified as Endangered 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.

Pyrenula nitida는 서유럽 습한 대서양 삼림의 오래된 활엽수 매끄러운 수피에 매끄럽고 광택 있는 올리브 녹색에서 갈색 엽상체와 내포된 플라스크형 병각을 형성하는 수피생 각피 지의류이다. 서유럽에서 지속성 오래된 삼림의 대표 지표종으로 여겨진다. 고목 및 오래된 삼림 서식지의 손실로 심각하게 위협받는 멸종위기 지의류이다.