Colonial bentgrass vs Slimleaf bur ragweed

Agrostis capillaris compared with Ambrosia tenuifolia

Key Differences

• Colonial bentgrass is Least Concern while Slimleaf bur ragweed is Not Evaluated.

Taxonomic Classification

Rank	Colonial bentgrass	Slimleaf bur ragweed
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class	Liliopsida (Monocots)	Magnoliopsida (Dicots)
Order	Poales (Grasses)	Asterales (Daisies & Sunflowers)
Family	Poaceae (Grass Family)	Asteraceae (Daisy Family)
Genus	Agrostis	Ambrosia
Species	Agrostis capillaris	Ambrosia tenuifolia

Evolutionary Relationship

Colonial bentgrass and Slimleaf bur ragweed share a common ancestor at the Phylum level: Magnoliophyta. (Flowering Plants)

Conservation Status

Colonial bentgrass

LC — Least Concern

Slimleaf bur ragweed

NE — Not Evaluated

Physical Characteristics

Attribute	Colonial bentgrass	Slimleaf bur ragweed
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colonial bentgrass

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Neotropic biogeographic realm.

Range

Widely distributed across Europe (8 countries), North America (Canada, Costa Rica, United States), Oceania and the Pacific (Australia, New Zealand), and South America (5 countries).

Slimleaf bur ragweed

Habitat

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

Range

Widely distributed across Africa (Comoros, Madagascar), Asia (Israel, Turkey), Europe (8 countries), North America (United States), Oceania and the Pacific (Australia), and South America (Brazil, Chile).

Colonial bentgrass

<em>Agrostis capillaris</em>, colonial bentgrass, is a perennial grass in the family Poaceae with an extensive native range across Europe and naturalised populations in North America, South America, and Oceania, including Australia and New Zealand. This species is highly adaptable, colonising tropical and subtropical moist broadleaf forests, temperate grasslands, disturbed soils, roadsides, and cultivated landscapes within the Neotropical realm. It is assessed as Least Concern by the IUCN. Colonial bentgrass is a fine-leaved, low-growing species often used in lawn and sports turf applications due to its tolerance for close mowing and its capacity to form dense, even swards. Its panicle inflorescences bear numerous small spikelets on delicate, hair-like branches, giving the species a feathery appearance when in flower. In its naturalised range, <em>Agrostis capillaris</em> can become invasive, competing with native grass species in acid grasslands and open heathlands. The species tolerates acidic and nutrient-poor soils, attributes that contribute to its widespread persistence in degraded landscapes. Biological traits of this species remain poorly documented in the scientific literature.

Shared Countries

Both species can be found in 7 countries:

🇦🇺 Australia 🇧🇪 Belgium 🇧🇷 Brazil 🇨🇱 Chile 🇫🇷 France 🇸🇪 Sweden 🇺🇸 United States