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Page Last Updated: February 10 2017
Dogbane Family
7 species
Order: Gentianales
Family: Apocynaceae (Dogbane family)
Genus: Cynanchum
Species: Rossicum (Louiseae?)
Kingdom: Plantae
Division: Magnoliophyta
Perennial - also known as Pale Swallow-wort or
European Swallow-wort - C. louiseae (less common) is
similar enough to Common Milkweed that some
Monarch Butterflies will lay their eggs on it where the
larvae will die - a European moth (Hypena opulenta) has
been released (2013) in Ottawa to possibly control this
invasive plant - native to Eurasia
European Swallow-wort - C. louiseae (less common) is
similar enough to Common Milkweed that some
Monarch Butterflies will lay their eggs on it where the
larvae will die - a European moth (Hypena opulenta) has
been released (2013) in Ottawa to possibly control this
invasive plant - native to Eurasia
Updated November 9 2010
More Dog-Strangling Vine
Class: Magnoliopsida
Order: Gentianales
Family: Apocynaceae (Dogbane family)
Genus: Vinca
Species: Minor
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Perennial - also known as Myrtle - native to Europe
Order: Gentianales
Family: Apocynaceae (Dogbane family)
Genus: Asclepias
Species: Incarnata
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Perennial - Dogbane family now includes the Milkweed
family (Asclepiadaceae) - all dogbane plants have milky
white sap - native to North America
family (Asclepiadaceae) - all dogbane plants have milky
white sap - native to North America
Updated January 1 2014
More Swamp Milkweed
Order: Gentianales
Family: Apocynaceae (Dogbane family)
Genus: Asclepias
Species: Syriaca
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated November 24 2013
More Common Milkweed
Order: Gentianales
Family: Apocynaceae (Dogbane family)
Genus: Asclepias
Species: Tuberosa
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated August 3 2011
More Butterfly Milkweed
Perennial - Dogbane family now includes the Milkweed
family (Asclepiadaceae) - all dogbane plants have milky
white sap - also known as Silkweed - native to eastern
North America
family (Asclepiadaceae) - all dogbane plants have milky
white sap - also known as Silkweed - native to eastern
North America
Perennial - Dogbane family now includes the Milkweed
family (Asclepiadaceae) - all dogbane plants have milky
white sap - native to North America
family (Asclepiadaceae) - all dogbane plants have milky
white sap - native to North America
Order: Gentianales
Family: Apocynaceae (Dogbane family)
Genus: Apocynum
Species: Cannabinum (also Sibiricum)
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated September 9 2012
More Indian Hemp
Perennial - also known as Hemp Dogbane, Canadian
Hemp - native to North America
Hemp - native to North America
Order: Gentianales
Family: Apocynaceae (Dogbane family)
Genus: Apocynum
Species: Androsaemifolium
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated February 10 2017
More Spreading Dogbane
Perennial - flowers more flared and colourful than Indian
Hemp (see above) - native to North America
Hemp (see above) - native to North America
Updated March 28 2011
More Periwinkle
Order: Gentianales
Family: Apocynaceae (Dogbane family)
Genus: Asclepias
Species: Syriaca
Kingdom: Plantae
Class: Magnoliopsida
Division: Magnoliophyta (Flowering plants)
Updated November 24 2013
More Common Milkweed
Perennial - Dogbane family now includes the Milkweed
family (Asclepiadaceae) - all dogbane plants have milky
white sap - also known as Silkweed - native to eastern
North America
family (Asclepiadaceae) - all dogbane plants have milky
white sap - also known as Silkweed - native to eastern
North America
Dog-strangling Vine - flower approx. 1 cm - leaves 5 to 10 cm - height to 2 m - Lower Don Valley (Leaside) - June 2009
Periwinkle - flower approx. 2.5 cm - leaves 3 to 5 cm - height 15 to 20 cm - Rattray Marsh (Mississauga) - April 2009
Swamp Milkweed - flower approx. 7 mm - leaves to 15 cm - fruit 5 to 10 cm - height to 1.5 m - East Don Valley (Milne Hollow) - June 2013
Common Milkweed - flower approx. 1 cm - leaves to 15 cm - fruit 8 to 12 cm - height to 1.8 m - Lower Don Valley (Leaside) - July 2009
Butterfly MIlkweed - flower approx. 1 cm - leaves to 10 cm - height to 75 cm - High Park - July 2011
Indian Hemp - flower approx. 5 mm - leaves to 15 cm - height to 1 m - Kortright Centre for Conservation - July 2012
Spreading Dogbane - flower 6 to 9 mm - leaves 2.5 to 7.5 cm - height to 1 m - West Don Valley (E.T. Seton Park) - June 2011
Common Milkweed - flower approx. 1 cm - leaves to 15 cm - fruit 8 to 12 cm - height to 1.8 m - Leslie Spit - July 2013