Centric diatom vs Common Globe-Thistle

Skeletonema subsalsum compared with Echinops sphaerocephalus

Taxonomic Classification

Rank	Centric diatom	Common Globe-Thistle
Kingdom	Chromista (Chromista)	Animalia (प्राणी)
Phylum	Ochrophyta (Ochrophyta)	Chordata (रज्जुकी)
Class	Bacillariophyceae (Bacillariophyceae)	Mammalia (स्तनधारी)
Order	Thalassiosirales (Thalassiosirales)	Afrosoricida (Afrosoricida)
Family	Skeletonemaceae	Tenrecidae
Genus	Skeletonema	Echinops
Species	Skeletonema subsalsum	Echinops sphaerocephalus

Conservation Status

Centric diatom

NE — Not Evaluated

Common Globe-Thistle

NE — Not Evaluated

Physical Characteristics

Attribute	Centric diatom	Common Globe-Thistle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Centric diatom

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (7 countries) and North America (United States).

Common Globe-Thistle

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Widely distributed across Europe (19 countries), North America (Canada, United States), and Oceania and the Pacific (Australia).

Centric diatom

The Centric Diatom (Skeletonema subsalsum) is a species in the genus Skeletonema. Found across Europe (7 countries) and North America (United States).

Common Globe-Thistle

<em>Echinops sphaerocephalus</em>, commonly known as the common globe-thistle or great globe-thistle, is a perennial herbaceous plant in the family Asteraceae. The species has a distribution spanning Europe, North America, and Oceania, with naturalization in several regions outside its native southern and central European range. <em>Echinops sphaerocephalus</em> typically inhabits dry, open, and disturbed habitats including roadsides, waste ground, rocky slopes, and steppe grasslands, where it is well adapted to poor, well-drained soils. It produces distinctive spherical, steel-blue flower heads that are highly attractive to pollinators, particularly bees and butterflies, making it a valued plant in native garden planting and ecological restoration. The species is not currently evaluated for conservation status. Biological traits of this species remain poorly documented in the scientific literature. <em>Echinops sphaerocephalus</em> is a robust, spiny plant that can grow to considerable height and spreads readily in suitable open habitats. Its ornamental qualities and pollinator value have contributed to its deliberate planting in gardens and public green spaces beyond its native range.

Shared Countries

Both species can be found in 7 countries:

🇩🇰 Denmark 🇮🇪 Ireland 🇳🇴 Norway 🇷🇺 Russia 🇸🇪 Sweden 🇬🇧 United Kingdom 🇺🇸 United States