Carelessweed vs Colonial bentgrass

Amaranthus spinosus compared with Agrostis capillaris

Key Differences

• Carelessweed is Not Evaluated while Colonial bentgrass is Least Concern.

Taxonomic Classification

Rank	Carelessweed	Colonial bentgrass
Kingdom same	Plantae (Plants)	Plantae (Plants)
Phylum same	Magnoliophyta (Flowering Plants)	Magnoliophyta (Flowering Plants)
Class	Magnoliopsida (Dicots)	Liliopsida (Monocots)
Order	Caryophyllales (Caryophyllales)	Poales (Grasses)
Family	Amaranthaceae	Poaceae (Grass Family)
Genus	Amaranthus	Agrostis
Species	Amaranthus spinosus	Agrostis capillaris

Evolutionary Relationship

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

Conservation Status

Carelessweed

NE — Not Evaluated

Colonial bentgrass

LC — Least Concern

Physical Characteristics

Attribute	Carelessweed	Colonial bentgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Carelessweed

Habitat

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

Range

Widely distributed across Africa (20 countries), Asia (22 countries), Europe (23 countries), North America (6 countries), Oceania and the Pacific (11 countries), and South America (7 countries).

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).

Carelessweed

The Carelessweed (Amaranthus spinosus) is a species in the genus Amaranthus. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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 12 countries:

🇦🇷 Argentina 🇦🇺 Australia 🇧🇪 Belgium 🇧🇷 Brazil 🇨🇦 Canada 🇨🇴 Colombia 🇩🇰 Denmark 🇫🇷 France 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden 🇺🇸 United States