Common Star-Of-Bethlehem vs Polar bear

Ornithogalum umbellatum compared with Ursus maritimus

Key Differences

Common Star-Of-Bethlehem is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Common Star-Of-Bethlehem	Polar bear
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Magnoliophyta (被子植物門)	Chordata (脊索動物)
Class	Liliopsida (単子葉植物綱)	Mammalia (哺乳類)
Order	Asparagales (クサスギカズラ目)	Carnivora (ネコ目)
Family	Asparagaceae	Ursidae (Bears)
Genus	Ornithogalum	Ursus (Bears)
Species	Ornithogalum umbellatum	Ursus maritimus

Conservation Status

Common Star-Of-Bethlehem

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Common Star-Of-Bethlehem	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Common Star-Of-Bethlehem

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Asia (Japan), Europe (15 countries), North America (Canada, United States), and Oceania and the Pacific (Australia).

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 Star-Of-Bethlehem

<em>Ornithogalum umbellatum</em>, commonly known as the common star-of-Bethlehem, is a bulbous perennial herb in the family Asparagaceae (subfamily Scilloideae), native to Europe, North Africa, and southwestern Asia. This species typically inhabits grasslands, meadows, woodland clearings, vineyard margins, roadsides, and disturbed ground, growing from underground bulbs that allow survival through dry summers. Its native geographic range extends across southern and central Europe, the Mediterranean basin, and into western Asia, but the species has become naturalised in North America, South Africa, and other temperate regions worldwide following horticultural introduction. Classified as Least Concern on the IUCN Red List, <em>Ornithogalum umbellatum</em> maintains stable and often expanding populations, particularly where introduced. The plant produces star-shaped white flowers with green stripes on the outer tepals, typically arranged in a flat-topped corymb in spring. All parts of the plant are toxic to humans and livestock, containing cardiac glycosides. Biological traits such as average lifespan, body dimensions, and dietary specifics remain poorly documented at the individual plant level, though the bulbs are perennial and may persist for many years. The species spreads both by seed and by offsets from the parent bulb, facilitating colonisation of new sites.

Polar bear

地球上で最大の陸上肉食動物であるホッキョクグマは700kgを超えることがあり、カナダからロシアまでの北極海氷域全体に分布する。ワモンアザラシとヒゲアザラシを狩るために海氷に依存する高度に特化した海洋哺乳類である。広大な距離を泳ぐことができる優れた泳者でもある。脆弱種に指定されており、気候変動による急激な北極海氷の消失で個体群が深刻な圧力を受けている。