Common Yellow Wood-Sorrel vs Oso Polar

Oxalis dillenii compared with Ursus maritimus

Key Differences

Common Yellow Wood-Sorrel is Not Evaluated while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Common Yellow Wood-Sorrel	Oso Polar
Kingdom	Plantae (planta)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (cordados)
Class	Magnoliopsida (Dicots)	Mammalia (mamíferos)
Order	Oxalidales (Oxalidales)	Carnivora (carnívoros)
Family	Oxalidaceae	Ursidae (Bears)
Genus	Oxalis	Ursus (Bears)
Species	Oxalis dillenii	Ursus maritimus

Conservation Status

Common Yellow Wood-Sorrel

NE — Not Evaluated

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Common Yellow Wood-Sorrel	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Common Yellow Wood-Sorrel

Habitat

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

Range

Widely distributed across Asia (Japan, Turkey), Europe (23 countries), and North America (Canada, United States).

Oso Polar

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 Yellow Wood-Sorrel

<em>Oxalis dillenii</em>, the common yellow wood sorrel or slender yellow wood sorrel, is a small annual to short-lived perennial herbaceous plant in the family Oxalidaceae. It is native to eastern North America and has been introduced to many parts of Europe, Asia, and other temperate regions, where it occurs as a weed of cultivated ground, roadsides, waste places, lawns, and disturbed habitats. The plant typically grows 10–35 cm tall and produces trifoliate leaves with three notched, heart-shaped leaflets that fold downward in darkness or heat. Small bright yellow flowers with five petals are produced from spring through autumn. The cylindrical seed pods eject seeds forcibly at maturity. Biological traits such as average lifespan and body measurements remain poorly documented in consolidated scientific literature. Like other Oxalis species, <em>Oxalis dillenii</em> contains oxalic acid, giving leaves a sour taste and making them mildly toxic when consumed in large quantities. The plant provides nectar for small generalist pollinators. It has not been formally evaluated for IUCN conservation status but is considered common and widespread with no conservation concerns across its introduced and native ranges.

Oso Polar

El mayor carnivoro terrestre de la Tierra, el oso polar puede superar los 700 kg y se encuentra en el hielo marino del Artico, desde Canada hasta Rusia. Es un mamifero marino altamente especializado que depende del hielo marino para cazar focas anilladas y barbadas. Excelente nadador capaz de cubrir grandes distancias en agua abierta. Clasificado como Vulnerable, sus poblaciones soportan una presion severa por la rapida perdida de hielo marino artico debida al cambio climatico.