Big-Leaf Maple vs

Acer macrophyllum compared with Urocystis agropyri

Key Differences

Big-Leaf Maple is Least Concern while is Not Evaluated.

Taxonomic Classification

Rank	Big-Leaf Maple
Kingdom	Plantae (Plants)	Fungi (Fungi)
Phylum	Magnoliophyta (Flowering Plants)	Basidiomycota (Club Fungi)
Class	Magnoliopsida (Dicots)	Ustilaginomycetes (Ustilaginomycetes)
Order	Sapindales (Sapindales)	Urocystidales (Urocystidales)
Family	Sapindaceae	Urocystidaceae
Genus	Acer	Urocystis
Species	Acer macrophyllum	Urocystis agropyri

Conservation Status

Big-Leaf Maple

LC — Least Concern

NE — Not Evaluated

Physical Characteristics

Attribute	Big-Leaf Maple
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Big-Leaf Maple

Habitat

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

Range

Distributed across Belgium, Canada, Ireland, and United States.

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (6 countries).

Big-Leaf Maple

The Big-Leaf Maple (Acer macrophyllum) is a species in the genus Acer. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Urocystis agropyri is a smut fungus in the order Urocystidales, causing flag smut disease in wheat and related grasses, recognized as an economically damaging pathogen of cereal crops globally. The fungus infects wheat (Triticum aestivum) and other gramineous hosts including Agropyron species, penetrating seedling tissues systemically and eventually producing dark, sooty spore masses (sori) on flag leaves and stems, which rupture to release teliospores and dramatically reduce grain yield. Infected plants often show characteristic streaking and shredding of leaf tissue before spore release. Urocystis agropyri survives in soil and on seed surfaces, making seed-borne transmission a primary infection route. Historic outbreaks devastated wheat harvests before the widespread adoption of seed treatment fungicides and the development of resistant cultivars. Modern control relies on certified disease-free seed, seed dressing with systemic fungicides, and cultivation of resistant varieties. The pathogen remains a concern in regions where resistant varieties are not widely deployed or where fungicide resistance may emerge. Its distribution mirrors global wheat cultivation zones across temperate regions of Europe, Asia, North America, and Australia.