Common Thorn-Apple vs Polar bear

Datura stramonium compared with Ursus maritimus

Key Differences

Common Thorn-Apple is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Common Thorn-Apple	Polar bear
Kingdom	Plantae (植物)	Animalia (动物界)
Phylum	Magnoliophyta (木兰植物门)	Chordata (脊索动物门)
Class	Magnoliopsida (木兰纲)	Mammalia (哺乳動物)
Order	Solanales (茄目)	Carnivora (食肉目)
Family	Solanaceae	Ursidae (Bears)
Genus	Datura	Ursus (Bears)
Species	Datura stramonium	Ursus maritimus

Conservation Status

Common Thorn-Apple

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Common Thorn-Apple	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Common Thorn-Apple

Habitat

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

Range

Widely distributed across Africa (26 countries), Asia (20 countries), Europe (35 countries), North America (9 countries), Oceania and the Pacific (6 countries), and South America (7 countries).

Polar bear

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Common Thorn-Apple

<em>Datura stramonium</em>, the common thorn apple or jimsonweed, is an annual herbaceous plant in the family Solanaceae, believed to be native to Central America or southern North America but now cosmopolitan, occurring in over 90 countries across temperate and tropical regions worldwide. It is Not Evaluated on the IUCN Red List as a widespread weed. The plant grows in disturbed soils, waste ground, roadsides, agricultural fields, and gardens. It bears large, lobed leaves with an unpleasant odor, distinctive white to pale violet trumpet-shaped flowers, and spiny seed capsules. All parts of <em>Datura stramonium</em> are highly toxic, containing tropane alkaloids including scopolamine, hyoscyamine, and atropine, which can cause severe poisoning in humans and livestock. Despite its toxicity, it has a long history of medicinal and ritual use across many cultures. The species is considered an invasive weed in many agricultural contexts. Biological traits such as seed output per plant, precise lifespan, and biomass data remain poorly documented in standardized global assessments.