Chrysanthemum White Rust vs Common Globe-Thistle

Puccinia horiana compared with Echinops sphaerocephalus

Taxonomic Classification

Rank	Chrysanthemum White Rust	Common Globe-Thistle
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Basidiomycota (Club Fungi)	Chordata (Chordates)
Class	Pucciniomycetes (Pucciniomycetes)	Mammalia (Mammals)
Order	Pucciniales (Pucciniales)	Afrosoricida (Afrosoricida)
Family	Pucciniaceae	Tenrecidae
Genus	Puccinia	Echinops
Species	Puccinia horiana	Echinops sphaerocephalus

Conservation Status

Chrysanthemum White Rust

NE — Not Evaluated

Common Globe-Thistle

NE — Not Evaluated

Physical Characteristics

Attribute	Chrysanthemum White Rust	Common Globe-Thistle
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Chrysanthemum White Rust

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (12 countries), and South America (Brazil).

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).

Chrysanthemum White Rust

Chrysanthemum white rust is a disease caused by the fungal pathogen Puccinia horiana, a biotrophic rust fungus in the family Pucciniaceae. It is one of the most serious diseases affecting cultivated chrysanthemums globally and is classified as a quarantine pathogen in many countries. The disease was first described in Japan in the early twentieth century and has since spread to major chrysanthemum-producing regions worldwide through the international movement of infected plant material. Symptoms include pale green to yellow spots on the upper leaf surface corresponding to circular to angular white to pale pink pustules on the underside of the leaf, which produce masses of waxy, white teliospores. Unlike many rust fungi, Puccinia horiana has a simplified life cycle that does not require an alternate host, completing its development entirely on chrysanthemum. The fungus spreads readily via windborne spores, water splash, and contaminated cutting tools. Under cool, humid conditions with high relative humidity, infection can progress rapidly, causing extensive leaf damage and defoliation in severely affected plants. Strict phytosanitary measures including inspection of imported planting material, sanitation of growing facilities, and fungicide application are employed to manage the disease in commercial chrysanthemum production.

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 10 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇫🇷 France 🇩🇪 Germany 🇱🇹 Lithuania 🇳🇱 Netherlands 🇳🇴 Norway 🇵🇱 Poland 🇸🇪 Sweden 🇬🇧 United Kingdom