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Lichens
Page Last Updated: February 16 2021
12 species
Mealy Rosette? Lichen - approx. 3 cm
Order: Lecanorales
Family: Physciaceae
Genus: Physcia
Species: Millegrana?
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
More Mealy Rosette Lichen
More Mealy Rosette Lichen
Updated January 23 2011
Class: Lecanoromycetes
Possibly Hoary Rosette (P. Aipolia), Star Rosette (P.
stellaris) which is tolerant to air pollution
Cladonia Pixie Cup Lichen - approx. 3 cm
Order: Lecanorales
Family: Cladoniaceae
Genus: Cladonia
Species: Fimbriata?
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Lecanoromycetes
More Pixie Cup Lichen
More Pixie Cup Lichen
Updated August 29 2012
Rock Greenshield Lichen - approx. 30 cm
Order: Lecanorales
Family: Parmeliaceae
Genus: Flavoparmelia (also Parmelia)
Species: Baltimorensis
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Lecanoromycetes
Usually fruits on rocks
Common Greenshield Lichen - approx. 5 cm
Order: Lecanorales
Family: Parmeliaceae
Genus: Flavoparmelia (also Parmelia)
Species: Caperata
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Lecanoromycetes
Usually fruits on trees
Mealy Rosette? Lichen - approx. 3 cm - Lower Don Valley (Leaside) - January 2011
Cladonia Pixie Cup Lichen - height approx. 3 cm - West Don Valley (Wilket Creek Park) - October 2014
Common Greenshield Lichen - approx. 5 cm - West Don Valley (Sunnybrook Park) - September 2011
Rock Greenshield Lichen - approx. 30 cm - Rouge Park - November 2012
Order: Teloschistales
Family: Teloschistaceae
Genus: Xanthoria
Species: Parietina?
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Lecanoromycetes
Found most often on trees - also known as Orange or
Shore Lichen, Yellow Scale
Maritime Sunburst? Lichen - approx. 5 cm - Ashbridge's Bay - January 2016
Order: Teloschistales
Family: Teloschistaceae
Genus: Xanthoria
Species: Fallax?
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Lecanoromycetes
Found most often on trees
Hooded Sunburst? Lichen - approx. 5 cm - Bluffers Park - November 2010
Order: Candelariales
Family: Candelariales
Genus: Candelaria
Species: Concolor?
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Lecanoromycetes
Found most often on trees
Candleflame? Lichen - approx. 5 cm - Bluffers Park - November 2010
Maritime Sunburst? Lichen - approx. 5 cm
Candleflame? Lichen - approx. 5 cm
Hooded Sunburst? Lichen - approx. 5 cm
More Maritime Sunburst Lichen
More Maritime Sunburst Lichen
Updated April 5 2016
Hammered Shield Lichen - approx. 5 cm
Order: Lecanorales
Family: Parmeliaceae
Genus: Parmelia
Species: Sulcata
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
More Hammered Shield Lichen
More Hammered Shield Lichen
Updated January 23 2011
Class: Lecanoromycetes
Also known as Shield Lichen[p - possibly Bottlebrush
Shield lichen (P. squarrosa)
Hammered Shield Lichen - approx. 5 cm - Lower Don Valley (Crother's Woods) - March 2010
Cladonia Powderhorn Lichen - approx. 3 cm
Order: Lecanorales
Family: Cladoniaceae
Genus: Cladonia
Species: Coniocraea? Cylindrica?
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Lecanoromycetes
More Powderhorn Lichen
More Powderhorn Lichen
Updated June 16 2016
Cladonia Powderhorn Lichen - height approx. 3 cm - Toronto Islands - August 2012
Order: Teloschistales
Family: Teloschistaceae
Genus: Caloplaca (also Gyalolechia)
Species: Flavovirescens
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Lecanoromycetes
Found on rocks
Sulphur Firedot Lichen - approx. 5 cm - Louth Conservation Area (St. Catherines) - June 2019
Sulphur Firedot Lichen - approx. 5 cm
Order: Lecideales (Lecanorales?)
Family: Lecideaceae (Porpidiaceae?)
Genus: Porpidia
Species: ?
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Lecanoromycetes
Found on rocks
Porpidia species Lichen - approx. 3 cm - Louth Conservation Area (St. Catherines) - June 2019
Porpidia species Lichen - approx. 3 cm
Order: Verrucariales
Family: Verrucariaceae
Genus: Verrucaria
Species: Nigrescens
Kingdom: Fungi
Division: Ascomycota (Sac Fungi - Ascomycetes)
Class: Eurotiomycetes
Found on rocks
Verrucaria nigrescens Lichen - approx. 5 cm - Louth Conservation Area (St. Catherines) - June 2019
Verrucaria nigrescens Lichen - approx. 5 cm