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Fungi - Rusts
Page Last Updated: January 15 2012
3 species
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Crown Oat Rust - approx. 1.5 cm
Order: Uredinales
Family: Pucciniaceae
Genus: Puccinia
Species: Coronata
Crown Oat Rust on European Buckthorn tree - approx. 1.5 cm - Richmond Hill (Beaver Creek) - June 2009
Kingdom: Fungi
Class: Urediniomycetes
Phylum:  Basidiomycota (Basidiomycetes)
Also known as Crown Rust - heteroecious (barley / rye
and buckthorn hosts) - occurs on cultivated or wild oats
Quince Rust (Serviceberry fruit approx. 1 cm)
Order: Uredinales
Family: Pucciniaceae
Genus: Gymnosporangium
Species: Clavipes
Quince Rust on Smooth Serviceberry - Serviceberry fruit approx. 1 cm - Scarborough (Agincourt) - July 2011
Kingdom: Fungi
Class: Urediniomycetes
Phylum:  Basidiomycota (Basidiomycetes)
Also known as Cedar-quince Rust - heteroecious (rose
and cypress (junipers) hosts) - occurs on a wide range of
trees in the Rose family
Cedar-Hawthron Rust (spots to 1 cm)
Order: Uredinales
Family: Pucciniaceae
Genus: Gymnosporangium
Species: Globosum
Cedar-Hawthorn Rust on Hawthorn leaf - spots to 1 cm - Lower Don Valley (Crother's Woods) - July 2011
Kingdom: Fungi
Class: Urediniomycetes
Phylum:  Basidiomycota (Basidiomycetes)
Also known as Hawthorn Rust - heteroecious (rose and
cypress (junipers) hosts)
Cedar-Hawthron Rust leaf underside
Order: Uredinales
Family: Pucciniaceae
Genus: Gymnosporangium
Species: Globosum
Cedar-Hawthorn Rust on underside of Hawthorn leaf - tendrils to 2.5 cm - Lower Don Valley (Crother's Woods) - September 2011
Kingdom: Fungi
Class: Urediniomycetes
Phylum:  Basidiomycota (Basidiomycetes)
Also known as Hawthorn Rust - heteroecious (rose and
cypress (junipers) hosts)