Coastal Ragweed vs common broomrape

Ambrosia hispida compared with Orobanche minor

Key Differences

• Coastal Ragweed is Least Concern while common broomrape is Near Threatened.

Taxonomic Classification

Rank	Coastal Ragweed	common broomrape
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Asterales (Daisies & Sunflowers)	Lamiales (Lamiales)
Family	Asteraceae (Daisy Family)	Orobanchaceae
Genus	Ambrosia	Orobanche
Species	Ambrosia hispida	Orobanche minor

Evolutionary Relationship

Coastal Ragweed and common broomrape share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Coastal Ragweed

LC — Least Concern

common broomrape

NT — Near Threatened

Physical Characteristics

Attribute	Coastal Ragweed	common broomrape
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.

common broomrape

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 4 distinct biome types within the Afrotropic biogeographic realm.

Range

Widely distributed across Africa (Mauritius, Namibia, South Africa), Asia (Japan), Europe (12 countries), North America (United States), Oceania and the Pacific (Australia), and South America (Chile, Colombia). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

common broomrape

The common broomrape (<em>Orobanche minor</em>) is a parasitic flowering plant with an exceptionally wide global distribution, occurring across Africa, Asia, Europe, North America, Oceania, and South America, and typically inhabiting tropical and subtropical forests and grasslands. This species is classified as Near Threatened on the IUCN Red List, indicating that its populations may be declining in some parts of its range. As a member of the family Orobanchaceae, the common broomrape is a root parasite that attaches to the roots of host plants, most commonly members of the legume and carrot families, from which it draws all of its nutrients. It lacks chlorophyll and therefore cannot photosynthesize, making it entirely dependent on its host for survival. The species often produces spikes of yellowish or purplish tubular flowers above the soil surface during spring and summer across its diverse geographic range. Biological traits of this species remain poorly documented in the scientific literature.