| Wild
flowers & other flora
| Top
images left to right: |
1.
Becium obovatum
(Cat's Whiskers) |
| 2.
Moraea thomsonii (Bloutulp) |
| 3.
Streptocarpus vandeleuri |
| 4.
Eulophia welwischii |
|
One of the great delights
of the Magaliesberg
is the beauty and profusion of its flora ...
Dry Forest
The dappled shade of evergreen forests and humus-rich,
moist soils are ideal conditions for a number of species
of bryophytes and ferns. Bryophytes are primitive
plants, which include mosses. They lack roots and
need moisture for fertilisation. For these reasons
their distribution in the Magaliesberg is largely
restricted to shady forests and kloofs.
The majority of ferns are not
visible during the dry winter months, surviving underground
as dormant rhizomes or as latent fertilised spores
called zygotes. With the onset of rain, however, graceful
fronds emerge from sheltered positions under stones
or along the banks of temporary watercourses. Among
the most attractive are parsley ferns, Cheilanthes
and possibly the most frequently seen in the dry forests
is the common green fern Pellaea viridis.
Open Woodland
There are more than a hundred species of grasses in
the Magaliesberg. Some of the more common of them
can be easily identified and their presence is often
indicative of the condition of the veld. Rooigras,
Themeda triandra, is often dominant in undisturbed
grassland especially on the southern slope and the
characteristic inflorescence can be seen throughout
summer. It provides valuable grazing for both wild
and domestic animals and because it is usually associated
with other palatable grasses farmers regard it as
an indicator of well-managed veld.
Also associated with healthy grazing
is common thatchgrass, Hyparrhenia hirta, which has
soft hairless leaves in early summer but later develops
the familiar long woody stems used in roofing. Although
useful to humans these late summer stems are not eaten
by stock.
A number of flowers also grow
on the slopes of the Magaliesberg. Among them are
small lilies sending up inflorescences of yellow,
white or blue flowers from their underground bulbs
in spring. The use of bulbs by these plants provides
useful protection from the frosts and fires of winter
but they are much sought after by baboons and duiker.
A typical example of these bulbous lilies is Ledebouria
ovatifolia which is distinguished by its large purple-spotted
leaves.
A very distinctive member of the
lily family is the pineapple flower, Eucomis autumnalis,
which is leafy-topped inflorescence in December that
stands about 200mm tall. In the wild they seem to
prefer situations, which are sheltered among large
rocks.
The iris family is represented
on open slopes by several very attractive species.
In early spring when most of the veld is still dormant,
the small blue and yellow flower of the tulp, Moraea
thomsonii, emerges at the end of a leafless stalk.
It flower only in the afternoons and bloom, which
is poisonous to grazing animals, soon withers.
Alien Plant invasion is one of
the most serious threats to the Magaliesberg.
|