Common Water-Parsnip vs Onca

Sium suave compared with Panthera onca

Key Differences

Common Water-Parsnip is Least Concern while Onca is Near Threatened.

Taxonomic Classification

Rank	Common Water-Parsnip	Onca
Kingdom	Plantae (plantas)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (cordados)
Class	Magnoliopsida (Dicots)	Mammalia (mamíferos)
Order	Apiales (Apiales)	Carnivora (carnívoros)
Family	Apiaceae	Felidae (Cats)
Genus	Sium	Panthera (Big Cats)
Species	Sium suave	Panthera onca

Conservation Status

Common Water-Parsnip

LC — Least Concern

Onca

NT — Near Threatened

Population: ~64.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Common Water-Parsnip	Onca
Diet	—	Carnivore
Average Lifespan	—	15 years
Average Length	—	1.9 m
Average Weight	—	100.0 kg

Habitat & Geographic Range

Common Water-Parsnip

Habitat

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

Range

Distributed across Canada, Mexico, Norway, Taiwan, and United States.

Onca

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 6 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia, Ecuador, and Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Common Water-Parsnip

<em>Sium suave</em>, commonly known as the common water parsnip or hemlock water parsnip, is a perennial wetland herb in the family Apiaceae. It is classified as Least Concern by the IUCN and is distributed across a wide geographic range that includes Canada, the United States, Mexico, Norway, and Taiwan, reflecting its adaptability to temperate and subtropical freshwater margins. The species typically grows in marshes, wet meadows, stream banks, and shallow water, rooting in saturated soils with stems partially submerged. It produces pinnately compound leaves with serrated leaflets and bears flat-topped white flower clusters called umbels in mid to late summer. <em>Sium suave</em> can reach heights of one to two meters and is often found in dense stands along slow-moving waterways. Despite its common name suggesting edibility, the plant contains toxic alkaloids and should not be consumed. The roots are particularly toxic and have been historically confused with edible water parsnip, posing a risk to foragers. Biological traits including average lifespan, stem height details, and mass remain poorly documented in standardized databases. Ecologically, common water parsnip provides nesting and foraging cover for wetland birds and mammals, and its umbel flowers attract a diversity of pollinators. The plant plays a structural role in freshwater riparian plant communities across its broad North American and Eurasian distribution.

Onca

O maior felino das Américas, atingindo até 100 kg com corpo robusto e musculoso e pelagem com padrão de rosetas característico. Encontrado do México até a América do Sul, com populações mais expressivas na Amazônia e no Pantanal. Nadadores poderosos e predadores de topo, os jaguares desempenham papel fundamental na regulação das populações de presas. Classificado como Quase Ameaçado, com sua área de ocorrência diminuindo devido ao desmatamento.