Tribe: Heliantheae
Life
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> Eudicotyledons > Core Eudicots > Asterids >
Euasterid II > Family: Asteraceae
Seven genera and fourteen species are native to southern
Africa, with nineteen genera and 41 species naturalised and an
additional five genera and 22 species cultivated.
Genera native to southern Africa
(based on Herman et al. 2000)
Aspilia
About 60 species, found in America, Africa and Madagascar with
five species
native to southern Africa and one species cultivated.
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Athroisma
One species native to southern Africa - Athroisma stuhlmannii
(recorded from Zimbabwe).
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Bidens
There are 233 species found around
the world. Four species are native to
southern Africa, three species are naturalised weeds and additional three
species are cultivated in the region.
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Blainvillea
The 10 species are found in the tropics.
Blainvillea gayana is the only
species in southern Africa.
See
Flora of Zimbabwe.
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Enydra
The 10 species have a pantropical native distribution with one of them,
Enydra fluctuans, native to KwaZulu-Natal.
See
Flora of Zimbabwe.
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Sclerocarpus
The eight species are native to Central America, Mexico and Africa, with one
species, Sclerocarpus africanus, found in southern Africa (northern parts
of Namibia and Botswana).
See
Flora of Zimbabwe.
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Spilanthes
The six species have a pantropical distribution, with
one native species and another naturalised species southern Africa.
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Genera naturalised in southern Africa
(based on Herman et al. 2000)
Acanthospermum
The six species are native to Central and
South America. Three species have become naturalised in southern Africa.
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Ambrosia
The 43 species are native to North and South America.
Four are naturalised in southern Africa.
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Chrysanthellum
The 13 species are native to Mexico, Central America, West Indies and
Galapagos Islands.
Chrysanthellum indicum is an introduced weed in southern Africa.
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Coreopsis
About 114 species, found in North and South
America and in Africa. Two species are naturalised in southern Africa and
another two species are cultivated in the region.
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Cosmos
The 26 species are native to tropical and warm regions of America.
Three species have become weeds in southern Africa.
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Eclipta
There are four species, found in the tropics. One of these, Eclipta
prostrata, is a cosmopolitan weed that has become well established in
southern Africa.
See
Flora of Zimbabwe.
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Galinsoga
The 13 species are native to the Americas.
Three species are introduced weeds in southern Africa. |
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Guizotia
The six species are native to tropical Africa.
Guizotia abyssinica and
Guizota scabra (recorded from
Zimbabwe and Mozambique, see
Flora of Zimbabwe) have been
introduced to southern Africa and have become naturalised.
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Helianthus
The 50 species are native to North America.
Three of them are occasional escapes in southern Africa and another three
species are cultivated in southern Africa. |
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Melanthera
The 20 species are native to the USA, Central America, the West Indies and
tropical Africa. Four species have been introduced to southern Africa and
become naturalised and an additional species is cultivated in the region. |
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Montanoa
The 25 species are native to North, Central and South America.
Montana bipinnatifida
and
Montanoa
hibiscifolia (see
Flora of Zimbabwe) have become naturalised along the east coast of southern
Africa.
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Parthenium
The 16 species are native to the Americas.
Parthenium hysterophorus
(Parthenium) (see
Flora of Zimbabwe) is a
widespread weed that has become established in southern Africa and in
South Africa is a declared
Category 1 invasive plant.
In addition, Parthenium argentatum (Guayule) is cultivated in the
region.
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Sigesbeckia
The three species are native to tropical Africa and Asia.
Sigesbeckia
orientalis has been introduced to southern Africa where it has become
established in forest areas.
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Sphagneticola
The four species are native to tropical America.
Sphagneticola trilobata
(see
Flora of Zimbabwe) has
been introduced to southern Africa as a cultivated ground cover and has
become naturalised in KwaZulu-Natal.
It is a declared
Category 1 invasive plant in Kwa-Zulu Natal,
a Category 3 invasive plant in the rest of
South Africa. |
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Tithonia
There are 11 species, native to North and Central America.
Tithonia
diversifolia and Tithonia rotundifolia have become naturalised in southern
Africa.
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Tridax
About 30 species, native to Central and South America.
Tridax procumbens
is a pantropical weed that has become established in southern Africa.
See
Flora of Zimbabwe.
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Verbesina
About 300 species, native to the Americas.
Verbesina encelioides is an
introduced weed in southern Africa (see
Flora of Zimbabwe).
In addition, Verbesina virginica is cultivated in the region.
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Xanthium
The three species are widespread weeds in the
warmer regions of the world. Two of them, Xanthium spinosum and
Xanthium strumarium are
declared Category 1
invasive plants in South Africa.
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Zinnia
The 22 species are native to the Americas.
Zinnia peruviana is an introduced weed in southern Africa, while
there are there are three additional species cultivated in the region.
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Other genera, cultivated in southern Africa
List from Glen (2002). The species name is provided in
genera that have only one species represented in southern Africa.
Calea urticifolia
Native from Mexico to Panama.
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Dracopsis amplexicaulus
Native to the USA.
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Echinacea
Two species cultivated.
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Lasthenia coronaria
[= Actinolepis coronaria]
Native to California, USA.
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Rudbeckia
Two species cultivated.
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Publications
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Herman, P.P.J., Retief, E., Koekemoer, M.
& Welman, W.G. 2000. Asteraceae (Compositae). In: Seed Plants of
Southern Africa (ed. O.A. Leistner). Strelitzia 10: 101-170.
National Botanical Institute, Pretoria.
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Karis, P.O. & Ryding, O. 1994. Tribes
Helenieae and Heliantheae. In: Asteraceae, Cladistics
& Classification (ed. K. Bremer). Timber Press, Portland,
Oregon, pp. 521-624.
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