Common Wall Cress vs Mountain Rock-Cress

Arabidopsis thaliana compared with Arabidopsis petraea

Taxonomic Classification

Rank	Common Wall Cress	Mountain Rock-Cress
Kingdom same	Plantae (planta)	Plantae (planta)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order same	Brassicales (Brassicales)	Brassicales (Brassicales)
Family same	Brassicaceae	Brassicaceae
Genus same	Arabidopsis	Arabidopsis
Species	Arabidopsis thaliana	Arabidopsis petraea

Evolutionary Relationship

Common Wall Cress and Mountain Rock-Cress share a common ancestor at the Genus level: Arabidopsis.

Conservation Status

Common Wall Cress

LC — Least Concern

Mountain Rock-Cress

LC — Least Concern

Physical Characteristics

Attribute	Common Wall Cress	Mountain Rock-Cress
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Wall Cress

Habitat

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

Range

Widely distributed across Africa (South Africa), Asia (Japan, Taiwan), Europe (11 countries), North America (Canada, United States), Oceania and the Pacific (Australia), and South America (Brazil, Chile).

Mountain Rock-Cress

Habitat

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

Range

Distributed across Denmark, Iceland, Norway, Sweden, and United States.

Common Wall Cress

<em>Arabidopsis thaliana</em>, commonly known as common wall cress or thale cress, is a small annual flowering plant in the family Brassicaceae native to Eurasia and Africa, and now naturalized in North America, Australia, and other temperate regions worldwide. The species has become one of the most important model organisms in plant biology and genetics, owing to its small genome size, short generation time of approximately six weeks, prolific seed production, and ease of laboratory cultivation. <em>Arabidopsis thaliana</em> was the first plant to have its complete genome sequenced, in 2000, revolutionizing our understanding of plant molecular biology, development, and physiology. In nature, it typically grows in rocky outcrops, disturbed sandy soils, walls, roadsides, and waste ground, tolerating poor nutrient conditions and a wide range of climates. The plant produces a basal rosette of small ovate leaves, followed by an erect flowering stem bearing tiny white four-petaled flowers and slender silique seed pods. Despite its modest appearance, <em>Arabidopsis thaliana</em> has facilitated thousands of scientific discoveries in plant genetics, epigenetics, and stress responses. The species is currently assessed as Least Concern by the IUCN. Biological traits such as average lifespan, plant height up to 30 centimeters, and seed output are well-characterized in laboratory settings.

Shared Countries

Both species can be found in 5 countries:

🇩🇰 Denmark 🇮🇸 Iceland 🇳🇴 Norway 🇸🇪 Sweden 🇺🇸 United States