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Page Last Updated: December 27 2016
Aster Family 1
Philadelphia Fleabane
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Erigeron
Species: Philadelphicus
Kingdom: Plantae
Class: Magnoliopsida
Perennial - flowers may be white - also known as Common
Fleabane - Philadelphia Fleabane has leaves that clasp the
stem while the similar Daisy Fleabane (see below) does
not  - open woods and fields - native to North America
Division: Magnoliophyta (Flowering plants)
23 species
Eastern Daisy Fleabane
Order: Asterales
Genus: Erigeron
Species: Annuus
Kingdom: Plantae
Class: Magnoliopsida
Annual - flowers may be pink - fields and waste areas -
native to North America
Division: Magnoliophyta (Flowering plants)
Updated January 1 2014
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Family: Asteraceae (Aster family)
Canada Fleabane
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Conyza
Species: Canadensis
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated October 4 2011
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Annual - also known as Horseweed - fields and waste
areas - native to North America
New England Aster
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Symphyotrichum
Species: Novae-angliae
Kingdom: Plantae
Class: Magnoliopsida
Perennial - leaves are clasping - meadows - native to North
America
Division: Magnoliophyta (Flowering plants)
Updated July 3 2013
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Mugwort
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Artemisia (Sagebrush)
Species: Vulgaris
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated February 3 2014
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Perennial - also known as Common Wormwood - fields
and waste areas - native to Eurasia and north Africa
Zig-zag Goldenrod
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Solidago (Goldenrod)
Species: Flexicaulis
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated September 6 2010
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Perennial - also known as Broad-leaved Goldenrod - stems
are zig-zagged near the top - rich, shady forests - native to
eastern North America
Grass-leaved Goldenrod
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Euthamia (formerly Solidago)
Species: Graminifolia
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated September 18 2010
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Perennial - also known as Lance-leaved or Flat-topped
Goldenrod - leaves are often covered with black spots
caused by a fungus - moist open areas, marshes,
swamps, fields - native to North America
Calico Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Lateriflorum (formerly Lateriflorus)
Kingdom: Plantae
Class: Magnoliopsida
Perennial - disk flowers are yellow at first and then turn
purplish red so that flowers on the same plant or even the
same flower can be different colours giving the plant its
common name of Calico - wood borders - native to eastern
North America
Division: Magnoliophyta (Flowering plants)
Updated January 2 2011
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Genus: Symphyotrichum (formerly Aster)
Panicled Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Lanceolatum (formerly Lanceolatus)
Kingdom: Plantae
Class: Magnoliopsida
Perennial - also known as Tall White or White Panicle Aster
- meadows - native to North America
Division: Magnoliophyta (Flowering plants)
Updated January 2 2011
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Genus: Symphyotrichum (formerly Aster)
Updated March 17 2011
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Canada Goldenrod
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Solidago
Species: Canadensis
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated April 22 2011
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Perennial - Tall Goldenrod (formerly S. altissima) is now
considered to be a variation of the same species (S.
canadensis var. scabra) - Late Goldenrod (S. gigantea -
also known as Tall or Giant) is very similar - meadows,
thickets, roadsides  - native to North America
Updated March 13 2013
Goldenrod Galls
Goldenrod Galls
Blue-stemmed Goldenrod
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Solidago
Species: Caesia
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated January 22 2012
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Perennial - also known as Bluestem, Wreath or Woodland
Goldenrod - rich, shady forests - native to eastern North
America
Beach Wormwood (1st year)
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Artemisia (Sagebrush)
Species: Campestris subspecies Caudata
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated January 19 2014
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Biennial / Perennial - also known as Tall or Field
Wormwood, Field Sagewort. Field Mugwort - binomial name
also Artemisia caudata - sandy beaches and dunes - native
to eastern North America
Biennial Wormwood
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Artemisia (Sagebrush)
Species: Biennis
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated March 15 2012
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Annual / Biennial - also known as Biennial Sagewort - fields
and waste areas - native to western North America
Purple-stemmed Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Puniceum (formerly Puniceus)
Kingdom: Plantae
Class: Magnoliopsida
Perennial - also known as Swamp Aster - flowers are less
often white - wet areas - native to eastern North America
Division: Magnoliophyta (Flowering plants)
Updated September 12 2013
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Genus: Symphyotrichum (formerly Aster)
Beach Wormwood (2nd year)
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Artemisia (Sagebrush)
Species: Campestris subspecies Caudata
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated January 19 2014
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Biennial / Perennial - also known as Tall or Field
Wormwood, Field Sagewort. Field Mugwort - binomial name
also Artemisia caudata - sandy beaches and dunes - native
to eastern North America
Mugwort - flower head approx. 3 mm - leaves to 10 cm (decreasing with height) - height to 2 m - Lower Don Valley (Crother's Woods) - August 2010
New England Aster - flower head to 3 cm - leaves  to 12 cm - height to 1.2 m - Humber Bay Park - September 2009
Calico Aster - flower head approx. 1.5 cm - leaves  to 15 cm - height to 1.5 m - Lower Don Valley (Crother's Woods) - September 2010
Panicled Aster - flower head to 2.5 cm - leaves  to 15 cm - height to 1.5 m - Humber Bay Park - September 2010
Philadelphia Fleabane - flower head to 3.5 cm - leaves  to 15 cm - height to 70 cm - Lower Don Valley (Leaside) - June 2009
Eastern Daisy Fleabane - flower head to 2 cm - leaves  to 12 cm - height to 1.5 m - High Park - June 2010
Canada Fleabane - flower head to 5 mm - leaves  to 10 cm - height to 1.5 m - Leslie Spit - September 2008
Zig-zag Goldenrod - flower head approx. 8 mm - leaves 7 to 15 cm - height to 1 m - Lower Don Valley (Crother's Woods) - August 2010
Grass-leaved Goldenrod - flower head approx. 5 mm - leaves 4 to 13 cm - height to 1.5 m - Lower Don Valley (Crother's Woods) - August 2010
Canada Goldenrod - flower head approx. 3 mm - leaves 5 to 13 cm - height to 1.5 m - Samuel Smith Park - September 2010
Blue-stemmed Goldenrod - flower head approx. 5 mm - leaves 6 to 12 cm - height to 90 cm - Lower Don Valley (Leaside) - September 2010
Beach Wormwood (1st year) - flower head approx. 2 mm - leaves to 10 cm - height to 1.5 m - Toronto Islands - April 2011
Biennial Wormwood - flower head approx. 2 mm - leaves to 10 cm - height to 1.5 m - Lower Don Valley (Crother's Woods) - September 2010
Purple-stemmed Aster - flower head to 3 cm - leaves to 15 cm - height to 2 m - West Don Valley (Wilket Creek Park) - September 2012
Beach Wormwood (2nd year) - flower head approx. 2 mm - leaves to 10 cm - height to 1.5 m - Toronto Islands - July 2013
Heath Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Ericoides
Kingdom: Plantae
Class: Magnoliopsida
Perennial - also known as White or White Heath Aster -
meadows - native to North America
Division: Magnoliophyta (Flowering plants)
Updated January 2 2011
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Genus: Symphyotrichum (formerly Aster)
Heath Aster - flower head approx. 1 cm - leaves  to 6 cm - height to 1 m - Samuel Smith Park - October 2009
Amethyst Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Symphyotrichum × amethystinum
Kingdom: Plantae
Class: Magnoliopsida
Perennial - hybrid between New Enland and Heath Asters
and usually found close to both - leaves are
clasping like
New England Aster with a size and form like Heath Aster -
the flowers are similar to New England Aster but smaller -
meadows - native to North America
Division: Magnoliophyta (Flowering plants)
Updated January 30 2016
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Genus: Symphyotrichum (formerly Aster)
Amethyst Aster (centre) with New England and Heath Asters (see above) - flower head approx. 2 cm - leaves  to 6 cm - height to 1 m - Thorncliffe Park - September 2015
Azure Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Oolentangiense (formerly Azureus)
Kingdom: Plantae
Class: Magnoliopsida
Perennial - also known as Sky Blue Aster - leaves have
winged
petioles (stalks) - wood edges, fields, prairies -
native to eastern North America
Division: Magnoliophyta (Flowering plants)
Updated January 30 2016
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Lowrie's Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Lowrieanum
Kingdom: Plantae
Class: Magnoliopsida
Perennial - similar to Heart-leaved Aster (see above) but the
upper leaves have winged
petioles (stalks) - lower leaves
are heart-shaped - flowers are pale blue / violet or white -
forest edges, wooded areas, meadows in wooded areas -
native to eastern North America
Division: Magnoliophyta (Flowering plants)
Updated January 30 2016
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Azure Aster - flower head approx. 1.5 cm - lower leaves to 7.5 cm (decreasing with height) - height to 1 m - High Park - September 2015
Large-leaved Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Macrophylla (formerly Macrophyllus)
Kingdom: Plantae
Class: Magnoliopsida
Perennial - also known as Bigleaf Aster - wooded areas -
native to eastern North America
Division: Magnoliophyta (Flowering plants)
Updated September 8 2013
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Genus: Eurybia  (formerly Aster)
Large-leaved Aster - flower head to 3 cm - lower leaves to 20 cm - height to 1.2 m - Lower Don Valley (Crother's Woods) - October 2010
Genus: Symphyotrichum (formerly Aster)
Flat-topped White Aster
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Doellingeria (formerly Aster)
Species: Umbellata (formerly Umbellatus)
Kingdom: Plantae
Class: Magnoliopsida
Perennial - also known as Parasol Whitetop - wood borders
and wet areas  - native to eastern North America
Division: Magnoliophyta (Flowering plants)
Updated December 19 2010
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Flat-topped White Aster - flower head to 3 cm - leaves  to 15 cm - height to 2 m - Lower Don Valley (Crother's Woods) - July 2010
Heart-leaved Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Cordifolium (formerly Cordifolius)
Kingdom: Plantae
Class: Magnoliopsida
Perennial - also known as Blue Wood Aster - open areas
and wood edges - native to eastern North America
Division: Magnoliophyta (Flowering plants)
Updated March 2 2016
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Genus: Symphyotrichum (formerly Aster)
Genus: Symphyotrichum (formerly Aster)
Stiff Goldenrod
Order: Asterales
Family: Asteraceae (Aster family)
Genus: Oligoneuron (formerly Solidago)
Species: Rigidum (formerly Rigida)
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated February 16 2016
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Perennial - also known as Hard-leaved, Stiff-leaved or Rigid
Goldenrod - fields and open areas - native to eastern North
America
Stiff Goldenrod - flower head approx. 8 mm - corymb to 20 cm - leaves to 5 cm (basal to 15 cm) - height to 1.5 m - Rouge Park - September 2015
Smooth Aster
Order: Asterales
Family: Asteraceae (Aster family)
Species: Laeve
Kingdom: Plantae
Class: Magnoliopsida
Perennial - also known as Smooth Blue Aster - forest
edges, dry fields - native to eastern North America
Division: Magnoliophyta (Flowering plants)
Updated February 18 2016
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Genus: Symphyotrichum (formerly Aster)
Smooth Aster - flower head to 3 cm - leaves to 15 cm (typically half that) - height to 1 m - Rouge Park - September 2015
Lowrie's Aster - flower head approx. 2 cm - lower leaves to 10 cm (decreasing with height) - height to 1 m - High Park - October 2015
Heart-leaved Aster - flower head to 1.5 cm - lower leaves to 15 cm - height to 1.2 m - High Park - October 2015
Rough-leaved Goldenrod
Order: Asterales
Family: Asteraceae (Aster family)
Species: Patula
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated December 27 2016
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Perennial - also known as Roundleaf or Swamp Goldenrod
- leaf upper surface is rough - basal leaves have long,
winged
petioles - swamps and wet meadows - native to
eastern North America
Genus: Solidago
Rough-leaved Goldenrod - flower head approx. 8 mm - panicle to 45 cm - leaves to 10 cm (basal to 30 cm) - height to 2 m - Lower Don Valley (Todmorden Mills) - August 2016