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Tribe: Lactuceae
Life
> eukaryotes >
Archaeoplastida >
Chloroplastida
>
Charophyta > Streptophytina > Plantae (land plants)
> Tracheophyta (vascular plants) > Euphyllophyta > Lignophyta (woody plants)
> Spermatophyta (seed plants) > Angiospermae (flowering
plants)
> Eudicotyledons > Core Eudicots > Asterids >
Euasterid II > Family: Asteraceae
Genera native or naturalised (*) in southern Africa
(based on Herman et al. 2000)
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Cichorium
The 8 species are native to Europe, the Mediterranean region and Ethiopia.
Cichorium intybus (Chicory) is cultivated in southern Africa but is also
found as an escape in natural areas near where it is cultivated.
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Crepis
The 200 species are found in the northern Hemisphere and tropical Africa.
Two species have been introduced to southern Africa: Crepis capillaris
and Crepis hypochaeridea.
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Hedypnois
The native distribution of the 3 species is from Macronesia through to the
Mediterranean. Hedypnois cretica has been introduced to southern
Africa and become naturalised.
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Hypochaeris
About 50 species, native to Europe, Asia, North Africa and South America.
Four species have been introduced and become established in southern
Africa.
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Lactuca
About 100, cosmopolitan. Five species have become established in southern
Africa.
The genus includes Lettuce Lactuca sativa.
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Launaea
About 30 species, native to the Canary Islands, Mediterranean region, East
Asia, Africa and Madagascar. There are 4 species native to southern
Africa.
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Picris
There are 45 species, native to Europe, the Mediterranean region, Asia and
the mountains of Africa. Picris echioides and Picris
hierachioides have become established as weeds in southern Africa.
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Sonchus
About 60 species, native to Eurasia and tropical Africa. There are 11
species in southern Africa.
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Taraxacum
About 60 species, native to north temperate regions and temperate South
America. There are 15 species that have become established in southern
Africa.
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Tolpis
The 20 species are native to Macronesia, the Mediterranean region, and
Africa. Tolpis capensis is the only species native to southern
Africa.
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Tragopogon
About 50 species, native to temperate Eurasia and the Mediterranean
region. Three species are introduced weeds in southern Africa, associated
with cultivation.
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Urospermum
The 2 species are endemic to the Mediterranean region. One of them,
Urospermum
picroides, is an introduced weed in southern Africa.
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Youngia
About 30 species, native to Asia.
Youngia japonica is an introduced weed
in southern Africa.
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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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