Blue Lotus vs Coastal Ragweed

Nymphaea nouchali compared with Ambrosia hispida

Taxonomic Classification

Rank	Blue Lotus	Coastal Ragweed
Kingdom same	Plantae (растения)	Plantae (растения)
Phylum same	Magnoliophyta (магнолиофиты)	Magnoliophyta (магнолиофиты)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Nymphaeales (кувшинкоцветные)	Asterales (астроцветные)
Family	Nymphaeaceae	Asteraceae (Daisy Family)
Genus	Nymphaea	Ambrosia
Species	Nymphaea nouchali	Ambrosia hispida

Evolutionary Relationship

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

Conservation Status

Blue Lotus

LC — Least Concern

Coastal Ragweed

LC — Least Concern

Physical Characteristics

Attribute	Blue Lotus	Coastal Ragweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blue Lotus

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and montane grasslands and shrublands, among 5 distinct biome types spanning the Afrotropic and Indomalayan realms.

Range

Distributed across Comoros, Madagascar, and Maldives.

Coastal Ragweed

Habitat

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

Range

Found in Cuba.

Blue Lotus

The Blue Lotus (Nymphaea nouchali) is a species in the genus Nymphaea. It is currently classified as Least Concern on the IUCN Red List. Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and montane grasslands and shrublands, among 5 distinct biome types spanning the Afrotropic and .

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.