Brown Slender Toad vs

Ansonia leptopus compared with Chrysomyxa abietis

Key Differences

• Brown Slender Toad is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	Brown Slender Toad
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Chordata (Chordates)	Basidiomycota (Club Fungi)
Class	Amphibia (Amphibians)	Pucciniomycetes (Pucciniomycetes)
Order	Anura (Frogs & Toads)	Pucciniales (Pucciniales)
Family	Bufonidae	Coleosporiaceae
Genus	Ansonia	Chrysomyxa
Species	Ansonia leptopus	Chrysomyxa abietis

Conservation Status

Brown Slender Toad

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	Brown Slender Toad
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown Slender Toad

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (7 countries).

Brown Slender Toad

The Brown Slender Toad (Ansonia leptopus) is a species in the genus Ansonia. It is currently classified as Least Concern on the IUCN Red List. Typically found in freshwater habitats, moist forests, and wetlands.

Chrysomyxa abietis is a macrocyclic rust fungus in the family Coleosporiaceae (Basidiomycota) that causes spruce needle rust disease on Norway spruce (Picea abies) and related conifers across Europe. The fungus completes its life cycle entirely on conifers, infecting current-year needles in spring through airborne urediniospores and aeciospores, causing yellowing, deformation, and premature needle drop. Infected spruce stands show characteristic orange-yellow stripe discoloration on young needles, affecting photosynthesis and tree vigor. The rust is widespread in central and northern Europe, including Belgium, Denmark, Hungary, Norway, Slovenia, and the broader boreal forest zone, wherever susceptible Picea hosts occur. Unlike many rust fungi, C. abietis does not require an alternate host (heteroecious cycle); it is autoecious, cycling between different spore stages on the same host genus. Heavy infections can weaken trees and increase their susceptibility to other stressors including bark beetles and drought. The fungus is not evaluated for conservation status by the IUCN, as it is classified as Not Evaluated. While typically a natural component of coniferous forest ecosystems, outbreaks may intensify under warmer, wetter springs that favor spore dispersal and infection.