Calla lily vs Coastal Ragweed

Zantedeschia aethiopica compared with Ambrosia hispida

Taxonomic Classification

Rank	Calla lily	Coastal Ragweed
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class	Liliopsida (Monocots)	Magnoliopsida (Dicots)
Order	Alismatales (Alismatales)	Asterales (Daisies & Sunflowers)
Family	Araceae	Asteraceae (Daisy Family)
Genus	Zantedeschia	Ambrosia
Species	Zantedeschia aethiopica	Ambrosia hispida

Evolutionary Relationship

Calla lily and Coastal Ragweed share a common ancestor at the Phylum level: Magnoliophyta. (Flowering Plants)

Conservation Status

Calla lily

LC — Least Concern

Coastal Ragweed

LC — Least Concern

Physical Characteristics

Attribute	Calla lily	Coastal Ragweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Calla lily

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate coniferous forests, and montane grasslands and shrublands, among 4 distinct biome types spanning the Neotropic and Palearctic realms.

Range

Widely distributed across Africa (Burundi, Morocco), Asia (India, Taiwan, Turkey), Europe (14 countries), North America (Costa Rica, Mexico, United States), Oceania and the Pacific (Australia, New Zealand), and South America (5 countries).

Coastal Ragweed

Habitat

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

Range

Found in Cuba.

Calla lily

The Calla lily (Zantedeschia aethiopica) is a species in the genus Zantedeschia. It is currently classified as Least Concern on the IUCN Red List. Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate coniferous forests, and montane grasslands and shrublands, among 4 distinct biome types spanning the Neotropic and Palearctic realms.

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.