Coastal Ragweed vs Common sowthistle

Ambrosia hispida compared with Sonchus oleraceus

Taxonomic Classification

Rank	Coastal Ragweed	Common sowthistle
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Asterales (Daisies & Sunflowers)	Asterales (Daisies & Sunflowers)
Family same	Asteraceae (Daisy Family)	Asteraceae (Daisy Family)
Genus	Ambrosia	Sonchus
Species	Ambrosia hispida	Sonchus oleraceus

Evolutionary Relationship

Coastal Ragweed and Common sowthistle share a common ancestor at the Family level: Asteraceae. (Daisy Family)

Conservation Status

Coastal Ragweed

LC — Least Concern

Common sowthistle

LC — Least Concern

Physical Characteristics

Attribute	Coastal Ragweed	Common sowthistle
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 sowthistle

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 10 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (16 countries), Asia (12 countries), Europe (12 countries), North America (10 countries), Oceania and the Pacific (Kiribati, Marshall Islands, Samoa), and South America (5 countries).

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 sowthistle

<em>Sonchus oleraceus</em>, commonly known as the common sowthistle, is a cosmopolitan annual herb in the family Asteraceae, native to Europe and western Asia but now naturalised across nearly every continent. This species typically inhabits disturbed ground, roadsides, agricultural fields, gardens, and waste places, thriving in a wide range of soil types and climatic conditions. It is one of the most widely distributed weedy plants on Earth, with a geographic range spanning temperate and subtropical regions worldwide including North America, South America, Africa, Asia, Australia, and beyond. Classified as Least Concern on the IUCN Red List, <em>Sonchus oleraceus</em> is among the most ecologically successful colonisers of human-modified environments. The plant typically grows to 20–120 cm in height, producing distinctive yellow composite flower heads and lobed, spiny-margined leaves with milky latex sap. It completes its lifecycle rapidly, producing numerous wind-dispersed achenes that facilitate broad dispersal. As a plant, dietary traits are not applicable in the animal sense; it is itself consumed as a food source by livestock, insects, and in some cultures as an edible green for humans. Biological traits such as average lifespan metrics remain poorly documented for this weedy annual, though it typically completes its lifecycle within a single growing season.

Shared Countries

Both species can be found in 1 countries:

🇨🇺 Cuba