|
Salicaceae (willow and poplar family) 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 > Rosids >
Eurosid I > Order: Malpighiales
There are two genera and about 550 species (mainly north
temperate and subarctic regions, also highland areas of tropics). The only
indigenous species in southern Africa is Salix mucronata. There are also
three introduced naturalised species of Salix and four introduced,
naturalised species of Populus.
Genera native or naturalised (*) in southern Africa
List from Jordaan (2000)
* Populus (poplars and aspens)
About 40 species (north temperate and subtropical regions
plus one East African species). No indigenous species in southern Africa but
there are four naturalised species. There are an additional 11 species plus
16 additional subspecies/hybrids/varieties that are cultivated in southern
Africa (Glen 2002). Populus alba (White poplar,
Witpopulier) and Populus x canescens (Grey
poplar, Matchwood poplar, Vaalpopulier) are
declared Category 2 invasive
plants in South Africa. |
|
Salix (willows)
About 400 species worldwide (mainly temperate regions in
the northern hemisphere), with one indigenous and three naturalised species
in southern Africa. There are an additional 20 species plus an additional
five subspecies/hybrids/varieties that are cultivated in southern Africa
(Glen 2000). Salix babylonica (Weeping
willow, Treurwilger) and Salix fragilis (Crack or brittle
willow) are declared Category 2 invasive
plants in South Africa. |
|
Publications
-
Glen, H.F. 2002. Cultivated plants of
southern Africa. Jacana, Johannesburg.
-
Jordaan, M. 2000. Salicaceae. In: Seed Plants of
Southern Africa (ed. O.A. Leistner). Strelitzia 10: 499-500.
National Botanical Institute, Pretoria.
|
