birthwort vs common greasewort

Aristolochia clematitis compared with Aneura pinguis

Key Differences

• birthwort is Near Threatened while common greasewort is Least Concern.

Taxonomic Classification

Rank	birthwort	common greasewort
Kingdom same	Plantae (plantas)	Plantae (plantas)
Phylum	Magnoliophyta (Flowering Plants)	Marchantiophyta (hepáticas)
Class	Magnoliopsida (Dicots)	Jungermanniopsida (Jungermanniopsida)
Order	Piperales (Piperales)	Metzgeriales (Metzgeriales)
Family	Aristolochiaceae	Aneuraceae
Genus	Aristolochia	Aneura
Species	Aristolochia clematitis	Aneura pinguis

Evolutionary Relationship

birthwort and common greasewort share a common ancestor at the Kingdom level: Plantae. (plantas)

Conservation Status

birthwort

NT — Near Threatened

common greasewort

LC — Least Concern

Physical Characteristics

Attribute	birthwort	common greasewort
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

birthwort

Habitat

Found across multiple habitat types including temperate coniferous forests, flooded grasslands and savannas, and Mediterranean forests and woodlands, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Algeria), Europe (13 countries), and North America (Canada, United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

common greasewort

Habitat

Native to Asia and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (United States), and South America (Brazil, Colombia).

birthwort

The Birthwort (Aristolochia clematitis) is a species in the genus Aristolochia. It is currently classified as Near Threatened on the IUCN Red List. Found across multiple habitat types including temperate coniferous forests, flooded grasslands and savannas, and Mediterranean forests and woodlands, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are al

common greasewort

<em>Aneura pinguis</em>, commonly known as common greasewort, is a liverwort belonging to the genus Aneura within the family Aneuraceae. This cryptogamic plant inhabits ecosystems across Asia, Europe, and North America, thriving in moist or waterlogged environments. Its range encompasses Taiwan in Asia, six European countries, the United States in North America, and Brazil and Colombia in South America, indicating a broad geographic distribution across multiple continents. Common greasewort is assessed as Least Concern on the IUCN Red List. The species typically forms flat, ribbon-like thalli in damp habitats such as stream banks, wet rocks, and boggy ground. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 5 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States