The Baobab and the Iconic Trees of the Safari
Stand anywhere on the African savanna at dusk and the skyline is written in trees. A baobab bulges against the last orange light like something inflated from the inside; a flat-topped acacia catches the sun on its crown while its trunk stays in shadow; along the river a stand of fever trees glows an unnatural greenish-yellow. These are not incidental scenery. Each of these trees is an engineer of the landscape, a larder for wildlife, and a character in the stories people have told about the bush for as long as anyone has lived there.
The baobab, a tree built like a water tower
Few trees are as instantly recognisable as the baobab, of the genus Adansonia. Its trunk swells into a barrel that can reach enormous girth, tapering into a crown of stubby branches that, when bare, look uncannily like roots clawing at the sky. That silhouette gave rise to the widespread legend of the upside-down tree, planted by a restless god or an angry spirit with its head in the ground. The swollen trunk is not solid timber in the ordinary sense; its fibrous, moisture-holding wood lets the tree hoard water through long dry seasons, which is part of why baobabs endure where slimmer trees fail.
Baobabs are famously long-lived, with the oldest individuals generally reckoned to be many centuries old. They grow slowly and hollow with age, and large trees have been used by people as shelters, stores and meeting places. The tree flowers at night with large, pale, heavy blossoms that are pollinated chiefly by bats and bush babies drawn to the scent. The fruit that follows is a hard-shelled pod filled with dry, tangy pulp rich in vitamin C, which has earned the baobab the nickname of the cream-of-tartar or monkey-bread tree. Bark, leaves, seeds and pulp all find uses in food, fibre and traditional remedies.
The fever tree and its ominous name
Down in the low, damp ground beside a pan or a slow river, you may meet a tree that seems lit from within. The fever tree, Vachellia xanthophloea, has a smooth bark of luminous yellow-green, powdery to the touch, which actually carries out photosynthesis in addition to the leaves. The colour makes it one of the easiest savanna trees to name at a glance.
Its name, though, comes from fear rather than beauty. Early European travellers and settlers, camping in the humid, mosquito-thick hollows where these trees thrive, noticed that people who lingered near them often fell ill with fever. They blamed the tree and its exhalations. In fact the association was real but the cause was misread: the fever trees grew in exactly the swampy conditions that breed the mosquitoes carrying malaria, so the tree became an unwitting signpost for danger. The lore stuck long after the science was understood, and the name has never been shed.
The sausage tree, hung with strange fruit
If a tree looks as though someone has tied grey salamis to its branches, it is a sausage tree, Kigelia africana. Its heavy, sausage-shaped fruits dangle on long fibrous stalks and can grow surprisingly large and weighty, enough that guides warn visitors not to park or pitch a tent directly beneath a fruiting specimen.
The tree flowers before it fruits, and the flowers are as odd as the fruit. Deep maroon and trumpet-shaped, they open at night and give off a scent that appeals to bats, the tree's main pollinators, rather than to the human nose. The fruit is not eaten raw by people, being harsh and unpalatable in that state, but it is browsed by many wild animals and has a long history in traditional medicine and skin preparations across the continent. Elephants, baboons and antelope all take an interest in the fallen fruit, and the tree is a reliable landmark along riverbanks and floodplains.
The acacias, thorns that shape the plains
No tree says savanna more plainly than the flat-crowned thorn tree once lumped together as acacias and now largely divided between the genera Vachellia and Senegalia. The umbrella thorn, with its wide, level canopy, is the classic silhouette of the calendar photograph, and it earns that crown honestly: the flat top is thought to be shaped in part by generations of browsing giraffes and by wind and light on the open plain.
These trees are armoured for a reason. Long white spines and hooked thorns defend the nutritious leaves and pods against the many mouths that would strip them. Even so, they have evolved a deeper relationship with the animals around them. When giraffes and other browsers feed heavily, many acacias respond by loading their leaves with bitter tannins, and some are reported to release airborne signals that prompt neighbouring trees to do the same. The whistling thorn goes further still, growing hollow swollen bases at its thorns that biting ants move into; the ants gain a home and sugary secretions, and the tree gains a fierce standing army that swarms out to bite anything that disturbs the branches. The name comes from the sound the wind makes across the old, abandoned galls.
Roots that feed the soil and the herd
The value of these trees runs below ground as well. Many acacias, like other legumes, fix nitrogen through partnerships with soil bacteria, enriching the thin savanna earth and feeding the grasses that in turn feed the great herds. Their pods and seeds are a crucial dry-season food for browsers and for livestock, and the fine gum that weeps from the bark of certain species, gum arabic among them, has been traded for a very long time and still turns up in foods and other products worldwide.
A single mature tree on the plains is therefore a small economy. It shades and cools the ground beneath it, drops leaf litter that builds soil, offers nesting sites to birds and refuge to smaller animals, and concentrates nutrients where grazers gather. Around a baobab or a big acacia you will often find a richer, greener patch of bush than the surrounding grassland, a visible sign of the work the tree does simply by standing there.
Trees as landmarks, calendars and stories
For the people who live alongside them, the great trees are more than biology. A baobab may mark a boundary, a burial place or a gathering point, and its swelling and flowering track the turning of the seasons. Acacias signal water and shade to a traveller reading the land. The fever tree carries a warning in its very name, and the sausage tree its own body of remedies and beliefs. Across many cultures these trees appear in proverb, ceremony and caution, woven into the daily business of knowing a landscape well enough to survive in it.
That is what makes them worth pausing for on any safari. They are the fixed points around which the moving life of the bush arranges itself, the shade the lion sleeps in, the branch the leopard drapes over, the fruit the elephant seeks out. Learn to read them and the savanna stops being a blur of grass and becomes a legible place.
Explore on the map
The trees of the safari are not scattered at random; they follow water, soil and climate across the continent. If you want to see where the great baobab belts, the acacia savannas and the riverine fever-tree country fall in relation to the parks and reserves you might visit, open our interactive map and trace the habitats for yourself. It is the easiest way to turn a list of species into a sense of place, and to plan a route that puts these iconic trees squarely in your path.