Alpine Rock-Cress vs Onion Downy Mildew

Arabis alpina compared with Peronospora destructor

Key Differences

• Alpine Rock-Cress is Least Concern while Onion Downy Mildew is Not Evaluated.

Taxonomic Classification

Rank	Alpine Rock-Cress	Onion Downy Mildew
Kingdom	Plantae (Plants)	Chromista (Chromista)
Phylum	Magnoliophyta (Flowering Plants)	Oomycota (Oomycetes)
Class	Magnoliopsida (Dicots)	Peronosporea (Peronosporea)
Order	Brassicales (Brassicales)	Peronosporales (Peronosporales)
Family	Brassicaceae	Peronosporaceae
Genus	Arabis	Peronospora
Species	Arabis alpina	Peronospora destructor

Conservation Status

Alpine Rock-Cress

LC — Least Concern

Onion Downy Mildew

NE — Not Evaluated

Physical Characteristics

Attribute	Alpine Rock-Cress	Onion Downy Mildew
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Alpine Rock-Cress

Habitat

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

Range

Widely distributed across Europe (10 countries), North America (Canada, United States), and South America (Argentina).

Onion Downy Mildew

Habitat

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

Range

Widely distributed across Europe (4 countries), North America (United States), and South America (Brazil).

Alpine Rock-Cress

The Alpine Rock-Cress (Arabis alpina) is a species in the genus Arabis. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions. Widely distributed across Europe (10 countries), North America (Canada, United States), and South America (Argentina).

Shared Countries

Both species can be found in 3 countries:

🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States