Madrid-Trespe vs Acker-Trespe

Bromus madritensis compared with Bromus arvensis

Key Differences

Madrid-Trespe is Not Evaluated while Acker-Trespe is Near Threatened.

Taxonomic Classification

Rank	Madrid-Trespe	Acker-Trespe
Kingdom same	Plantae (Pflanzen)	Plantae (Pflanzen)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class same	Liliopsida (Monocots)	Liliopsida (Monocots)
Order same	Poales (Süßgrasartige)	Poales (Süßgrasartige)
Family same	Poaceae (Grass Family)	Poaceae (Grass Family)
Genus same	Bromus	Bromus
Species	Bromus madritensis	Bromus arvensis

Evolutionary Relationship

Madrid-Trespe and Acker-Trespe share a common ancestor at the Genus level: Bromus.

Ansehen Genus: Bromus

Conservation Status

Madrid-Trespe

NE — Not Evaluated

Acker-Trespe

NT — Near Threatened

Physical Characteristics

Attribute	Madrid-Trespe	Acker-Trespe
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Madrid-Trespe

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Africa (South Africa), Asia (Japan), Europe (15 countries), North America (Mexico, United States), Oceania and the Pacific (Australia), and South America (Chile).

Acker-Trespe

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate coniferous forests, and temperate broadleaf and mixed forests, among 7 distinct biome types spanning the Indomalayan and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (China, India, Japan), Europe (18 countries), and North America (Canada, Mexico, United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Madrid-Trespe

<em>Bromus madritensis</em>, compact brome or Madrid brome, is an annual grass in the family Poaceae with an expansive native distribution across the Mediterranean basin, extending into parts of Africa, the Middle East, and central Asia. It has also been widely introduced to North America, South America, Australia, and other regions, where it is often considered an invasive weed in disturbed grasslands and shrublands. The species grows typically to 15–50 centimetres in height, producing dense, compact panicles with characteristic bristle-tipped spikelets that aid seed dispersal by attachment to passing animals and clothing. It thrives in dry, disturbed habitats including roadsides, agricultural margins, coastal scrub, and degraded grasslands, demonstrating strong tolerance for poor soils and seasonal drought. Compact brome is a pioneer species that colonises bare ground rapidly and can outcompete native herbaceous vegetation in fragile ecosystems, particularly in California chaparral and Mediterranean-climate shrublands. It is Not Evaluated on the IUCN Red List, consistent with its abundance and broad distribution. The species completes its life cycle entirely within a single growing season, germinating in autumn or winter and setting seed by late spring. Biological traits including precise lifespan data are inherent to its annual habit, but additional morphological and population data remain variable across its wide geographic range.