Common Silver Hairgrass vs

Aira caryophyllea compared with Dyadobacter jiangsuensis

Key Differences

• Common Silver Hairgrass is Endangered while is Not Evaluated.

Taxonomic Classification

Rank	Common Silver Hairgrass
Kingdom	Plantae (植物)	Bacteria (Bacteria)
Phylum	Magnoliophyta (木兰植物门)	Bacteroidota (拟杆菌门)
Class	Liliopsida (百合纲)	Bacteroidia (擬桿菌綱)
Order	Poales (禾本目)	Cytophagales (噬纤维菌目)
Family	Poaceae (Grass Family)	Spirosomaceae
Genus	Aira	Dyadobacter
Species	Aira caryophyllea	Dyadobacter jiangsuensis

Conservation Status

Common Silver Hairgrass

EN — Endangered

NE — Not Evaluated

Physical Characteristics

Attribute	Common Silver Hairgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Silver Hairgrass

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Cameroon), Asia (Japan, South Korea), Europe (6 countries), North America (4 countries), Oceania and the Pacific (Australia), and South America (4 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

Found in Taiwan.

Common Silver Hairgrass

<em>Aira caryophyllea</em>, commonly known as Common Silver Hairgrass, is a slender annual grass belonging to the family Poaceae within the order Poales. This delicate grass is currently classified as Endangered on the IUCN Red List, reflecting significant conservation concern despite its historically broad distribution. It is typically found across a remarkable diversity of biome types, including tropical and subtropical moist broadleaf forests, grasslands, savannas, and flooded habitats, demonstrating notable ecological versatility. Its geographic range spans multiple continents, with documented populations in Africa (Cameroon), Asia (Japan, South Korea), Europe, North America, Australia, and South America. As an annual grass, it completes its life cycle within a single growing season, reproducing via wind-dispersed seeds. The inflorescence typically bears silvery, shimmering spikelets that give the species its common name. Biological traits such as average lifespan, body dimensions, and dietary specifics follow typical patterns for annual grasses — drawing nutrients from soil through root absorption rather than consuming other organisms. The endangered status suggests populations may be declining due to habitat loss, land-use change, or invasive species pressure across parts of its range.

江苏双孢杆菌（Dyadobacter jiangsuensis）是细胞形菌科中一种革兰氏阴性橙色素菌，最初从中国江苏省土壤样品中分离得到。该菌为需氧、杆状、不运动的细菌，能够降解其所处土壤环境中的多糖。双孢杆菌属归属于细菌域拟杆菌门，广泛分布于陆地和淡水生境。