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The Namibian section showing Cyphostemma
uter, Commiphora saxicola in the foreground with Aloe littoralis
& Cyphostemma currorii in the background.
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The Namib section is the smallest. It has plants representing various
parts of Namibia, but mainly the Namib Desert and Kaokoland regions.
Rainfall in the Namib is mainly during summer with dry, sunny winters.
The vegetation consists of desert along the coast and the arid Savannah
to the north.
Granite rocks have been used in this section. Other smaller rocks
include dolomite from Khowarib Poort and dolorite from the Brandberg
region.
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The Welwitschia mirabilis plants here have been established
from seed planted directly into this bed. They are one of the worlds
most amazing and bizarre plants. It is a cone bearing plant. The
whole plant consist of two opposite strap-shaped leaves, a short
woody stem and the taproot. The leaves grow continuously and become
withered at their ends. The growth point withers in a seedling stage
and the the only growth that takes place is in the leaf primordium,
eventually resulting in the obconic head. The latter can grow, in
exceptional cases, up to 1 meter in height in its habitat and become
about 2 000 years old. It is a plant without a main stem. The plant
is a paradox, as small leaves are usually associated with desert
plants. Why these large leaves? If one looks at the plant's habitat,
it coincides with the fog belt. The regular fog of the cold Atlantic
Ocean condenses on its leaves and provides extra moisture. The plant
produces cones during the summer months.
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Another characteristic species planted in this section is the thickset
Cyphostemma dwarf tree. The display includes the large Cyphostemma
currorii, C. bainesii, and C. uter. Their large tri-foliate
leaves are produced in summer and become deciduous in winter. The
pylgif (Adenium boehmianum) is a small shrub bearing pink
flowers, formerly used by the Busman to poison their arrows and
hence its Afrikaans vernacular name. The cork bark (Commiphora)
trees are also prominent in the Namib. They belong to the myrrh
family (Burseraceae) and have a highly aromatic leaf sap. Introduced
here are the dwarf rock corkbark (C. saxicola), the oak-leafed
corkbark (C. wildii) and the C. kraeuseliana. These
grow like dwarf baobab trees and do not grow taller than a meter.
The python kambro (Fockea multiflora) has a huge gray succulent
stem with climbing branches clinging like a python to the trees.
The Namib stinging nettle (Obetia carruthersiana) has large
spiny leaves bearing irritant sap. The Namib coral tree (Erythrina
decora) is a small tree with a corky bark and coral red flowers.
Smaller plants introduced here include Kalanchoe laciniata
with attractive divided leaves. It has a fleshy root and becomes
deciduous during the winter months. During late summer the yellowish-orange
flowers appear. Aloe dinteri is a small aloe with leaves
in three ranks. It has fleshy roots and in nature occur among dolomite
rock formation. A. dewinteri grows on sheer cliffs. It has
orange and yellow flowers and tapering gray-white leaves. It flowers
during December. Aloe littoralis is the most common aloe
in Namibia and is solitary with a tall stem to 4 meters high. The
related A. esculenta is smaller with mottled leaves dividing
to form large groups. Petalidium coccineum, a shrub bearing
striking red flowers, has also been introduced in the display. The
shrubs are also grown on the main pillars and flower from winter
to summer. Other noteworthy species include: the shrub Sesamothamnus
benguellensis, Euphorbia venenata and E. eduardoi. Urginea
altissima a bulbous plant bearing a long solitary erect inflorescence
to 2 meters tall.
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