Common Reed vs Common Wall Cress

Phragmites australis compared with Arabidopsis thaliana

Taxonomic Classification

Rank	Common Reed	Common Wall Cress
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class	Liliopsida (Monocots)	Magnoliopsida (Dicots)
Order	Poales (Grasses)	Brassicales (Brassicales)
Family	Poaceae (Grass Family)	Brassicaceae
Genus	Phragmites	Arabidopsis
Species	Phragmites australis	Arabidopsis thaliana

Evolutionary Relationship

Common Reed and Common Wall Cress share a common ancestor at the Phylum level: Magnoliophyta. (Flowering Plants)

View Phylum: Magnoliophyta

Conservation Status

Common Reed

LC — Least Concern

Common Wall Cress

LC — Least Concern

Physical Characteristics

Attribute	Common Reed	Common Wall Cress
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Reed

Habitat

Found across multiple habitat types including flooded grasslands and savannas, deserts and xeric shrublands, and temperate broadleaf and mixed forests, among 6 distinct biome types spanning the Afrotropic and Palearctic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (4 countries), Asia (Iran, Pakistan, Taiwan), Europe (7 countries), North America (Canada, United States), Oceania and the Pacific (Australia, New Zealand), and South America (4 countries).

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).

Common Reed

Phragmites australis, the common reed, is one of the most widely distributed vascular plants on Earth, placed in the family Poaceae, order Poales. Its range encompasses all inhabited continents, including Africa, Asia, Europe, North America, Oceania, and South America, typically colonizing freshwater margins, brackish marshes, lake shores, riverbanks, and coastal wetlands. The species is assessed as Least Concern by the IUCN, with globally abundant populations, though some regional variants are subject to conservation concern. Common reed typically forms dense monoculture stands reaching heights of two to six meters, providing critical habitat structure for a wide range of wetland birds, invertebrates, and small mammals. It is a rhizomatous perennial grass, spreading vegetatively through extensive underground root systems as well as by wind-dispersed seeds. As an autotroph, Phragmites australis obtains energy through photosynthesis and plays a major role in nutrient cycling and carbon sequestration within wetland ecosystems. The species has significant economic value in thatching, basketry, and constructed wetland wastewater treatment systems. In North America, an introduced European genotype has become invasive, displacing native plant communities. Biological traits vary considerably across its global range.

Common Wall Cress

Arabidopsis thaliana, 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. Arabidopsis thaliana 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, Arabidopsis thaliana 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.