Common Dandelion vs Common Wall Cress

Taraxacum polyodon compared with Arabidopsis thaliana

Taxonomic Classification

Rank	Common Dandelion	Common Wall Cress
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Magnoliopsida (Dicots)	Magnoliopsida (Dicots)
Order	Asterales (Daisies & Sunflowers)	Brassicales (Brassicales)
Family	Asteraceae (Daisy Family)	Brassicaceae
Genus	Taraxacum	Arabidopsis
Species	Taraxacum polyodon	Arabidopsis thaliana

Evolutionary Relationship

Common Dandelion and Common Wall Cress share a common ancestor at the Class level: Magnoliopsida. (Dicots)

Conservation Status

Common Dandelion

LC — Least Concern

Common Wall Cress

LC — Least Concern

Physical Characteristics

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

Habitat & Geographic Range

Common Dandelion

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden.

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 Dandelion

<em>Taraxacum polyodon</em>, a species commonly referred to as a dandelion, is a perennial herbaceous plant in the family Asteraceae. This species is distributed across Denmark, Norway, and Sweden, where it typically inhabits diverse terrestrial habitats including grasslands, roadsides, lawns, and disturbed soils. Like other members of the genus Taraxacum, <em>Taraxacum polyodon</em> is characterized by a basal rosette of toothed leaves, hollow stems, and composite yellow flower heads that mature into spherical seed heads dispersed by wind. The species is capable of reproducing apomictically, meaning seeds can develop without fertilization, which contributes to its successful colonization of a wide variety of environments. It often thrives in nutrient-rich soils and tolerates moderate disturbance. Its conservation status is assessed as Least Concern, reflecting stable populations within its Scandinavian range. The common dandelion is an ecologically important early-season nectar source for pollinators including bees and hoverflies, and its leaves and roots have historically been used in culinary and medicinal contexts.

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 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden