African elephant vs Comb-Leaved Mermaidweed

Loxodonta africana compared with Proserpinaca pectinata

Key Differences

African elephant is Vulnerable while Comb-Leaved Mermaidweed is Least Concern.

Taxonomic Classification

Rank	African elephant	Comb-Leaved Mermaidweed
Kingdom	Animalia (動物)	Plantae (植物)
Phylum	Chordata (脊索動物)	Magnoliophyta (被子植物門)
Class	Mammalia (哺乳類)	Magnoliopsida (モクレン綱)
Order	Proboscidea (ゾウ目)	Saxifragales (ユキノシタ目)
Family	Elephantidae (Elephants)	Haloragaceae
Genus	Loxodonta (African Elephants)	Proserpinaca
Species	Loxodonta africana	Proserpinaca pectinata

Conservation Status

African elephant

VU — Vulnerable

Population: ~415.0K

Trend: Decreasing ↓

Comb-Leaved Mermaidweed

LC — Least Concern

Physical Characteristics

Attribute	African elephant	Comb-Leaved Mermaidweed
Diet	Herbivore	—
Average Lifespan	65 years	—
Average Length	6.0 m	—
Average Weight	6.0 t	—

Habitat & Geographic Range

African elephant

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 5 distinct biome types within the Afrotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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

Comb-Leaved Mermaidweed

Habitat

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

Range

Distributed across Canada and Cuba.

African elephant

地球上最大の陸上動物であるアフリカゾウは体重7,000 kgに達し、サハラ以南のサバンナ、森林、湿地に生息する。成熟した雌が群れを率いる高度に知的な社会構造を持ち、超低周波音やうなり声、接触によって意思疎通する。木を引き倒したり水飲み場を掘ったり種子を散布したりすることで生態系を形成するエンジニア種だが、象牙の密猟や生息地の喪失により個体数は減少しており、危急（VU）とされている。

Comb-Leaved Mermaidweed

<em>Proserpinaca pectinata</em>, the comb-leaved mermaidweed, is a semi-aquatic flowering plant in the family Haloragaceae, assessed as Least Concern on the IUCN Red List. It occurs in the freshwater wetlands of Canada and Cuba, growing in shallow water, pond margins, bogs, and wet meadows. The species is notable for its heterophylly, producing distinctly different leaf forms above and below the waterline: emergent leaves are linear or toothed while submerged leaves are deeply pinnately divided, resembling a comb — the feature that gives the plant its common name. This leaf-form plasticity is an adaptation to variable water levels in its riparian and wetland habitat. <em>P. pectinata</em> is a rooted aquatic plant that grows in nutrient-poor to moderately fertile waters and is sometimes cultivated in freshwater aquaria for its ornamental submerged foliage. No quantitative biological metrics are available for this species.