The current students on the EcoTraining Field Guide Course were taken on a walk around the Pridelands Camp to learn to identify various tree species. This course, recognized by FGASA as their Apprentice Field Guide Course, offers all the students to learn something new and for the international students the opportunity to see these species for the first time.
Student in the EcoTraining Pridelands Camp classroom
Before the tree identification walk could take place, all the students needed to have a lecture on the trees that they could possibly see whilst on their walk. The theoretical side of the lecture would inform them of the scientific as well as the common names of the trees as well as which parts can be utilized to make an accurate identification. Once this information had been shared, instructors Steve Baillie and Rhodes Bezuidenhout took the students on a walk around Pridelands camp to put all the theoretical knowledge to practical use.
EcoTraining instructor Steve Ballie introducing some of the trees
For their assessment, and to be competent to pass the module, the students have to be able to name three tree species but they also have to identify some of their uses, whether it be cultural, traditional or medicinal. On this practical walk, the students were asked to identify seven species.
Buffalo Thorn (Ziziphus mucronata)
The Afrikaans name, ‘blinkblaar-wag-‘n-bietjie’, is very descriptive! Getting entangled in one of these does tend to curtail your activity.
Probably more than any other tree, the Buffalo Torn has far-reaching cultural importance in Eastern and Southern Africa, with many beliefs attributed to it. In Botswana, the tree is believed to protect from lightning. The fruits are edible and nutritious though not very appetizing and can be eaten fresh, dried or made into porridge. Mix the crushed fruit pulp with water and you have a thirst-quenching drink, ferment it and you have a beer! The young leaves can be prepared similarly to spinach. Roasted seeds can be used as ‘pap’ or a coffee substitute. The wood is used for fence posts, fuel and tool handles. Nothing goes to waste. The sap can be used as a poison, the bark can be used to aid in tanning skins and hides. The roots have been known to aid in the treatment of snake bites, while the high tannin levels make it a remedy for dysentery.
The tree provides sustenance for animals and birds alike, including the elephant and the black rhino. Its nectar is a rich food source for local bee populations.
Weeping Wattle (Peltophorum africanum)
Also referred to as the African blackwood or African false-wattle, the bark is usually grooved and dark brown in the older plants. It has easily identifiable acacia-like leaves and yellow flowers. Not only is this tree a source of pollen for bees, birds and other insects, it is also utilized in many traditional medicines. It is said that the roots have antibacterial properties that can be used to treat wounds. They are also used in the treatment of mouth sores and can help relieve toothache. The leaves are said to remove internal parasites. The wide canopy and thick leafy canopy make ideal shade for animals and humans alike.
Sickle Bush (Dichrostachys cinerea)
Occurring throughout Africa, it also found in Madagascar, India, Indonesia, and Australia. The spines, which are modified hardened branchlets, have been known to be the chief source of many punctures to tires on game drive vehicles. Often leading to it being referred to colloquially as “Landrovis Papwielus”. As a pioneer species, it can establish itself quickly and acts as an erosion barrier. Being termite resistant, it is used in the manufacture of fence posts and it is a constant source of quality firewood for the local communities. Like many African tree species, this too has medicinal properties. The roots can be used as a local anaesthetic and in Botswana, it is often prescribed by traditional healers as a tapeworm cure. The lilac upper-half and the yellow lower have of the sweet-smelling puffy flowers give rise to a rather descriptive name, the Chinese lantern tree.
Tamboti (thicket) (Spirostachys africana)
An interesting fact about the Tamboti is that the milky latex that is secreted is poisonous to humans, but not to animals. It is a food source for many species of antelope, elephants, and black rhino. Porcupines’ appetites for the bark is so voracious that they sometimes ringbark the trees, which can lead to the death of the tree. The reason for referring to it as the ‘Jumping bean tree’, is that small grey moth from the Pyralidae family often lays its eggs in the fruit and the larvae cause the bean to ‘jump’ once they hatched.
Russet Bushwillow (Combretum hereroense)
While students like Kaenan took notes, Steve shared his knowledge with the group. Found in the Lowveld, this tree is often found in rocky areas and sometimes on river banks. The leaves are enjoyed by several antelope species as well as both elephant and giraffe. It is a very dense wood and as a result, it is often used to manufacture handles for tools and mine supports. If you are looking to make yourself a walking stick, then this is the tree to choose from. The seeds can also be used to make tea. If you want to know how to make bushwillow tea have a look at this video as instructor Mike Anderson shows us how it is done.
Jackalberry (Diospyros mespiliformis)
The Jackalberry tree is found throughout Africa. These trees are often found growing from termite mounds as they prefer the deep sedimentary soils (but it is also not uncommon for them to grow in sandy soils). As the wood of the Jackalberry is almost impermeable to termites, this makes a nice symbiotic relationship, as the termite colonies provide the tree with aerated soil and a source of moisture. In turn, the roots of the tree protect the termites, who don’t eat the living wood. Jackalberry wood is almost termite-resistant after it has been cut down and is most useful in the making of fence posts and tool handles. These trees can grow up to 24m with a circumference of 5m. The female Jackalberry is the only one to produce fruit.
Zebrawood (Dalbergia melanoxylon)
This tree occurs on all soil types although it is easier to find in areas with clay soils or on rocky outcrops. The heartwood, which is dark in colour, is heavier than the outer ring and, is also heavier than the iconic Leadwood tree. The flowers are a scented greenish-white that covers the tree during the summer months. The roots are favoured by elephants, while the leaves are enjoyed by a variety of species, including giraffe. The traditional medicinal properties include using the roots to treat headaches and toothache. The roots and the wood are often used to make woodwind instruments and jewellery.
So, next time you take a walk in your neighbourhood try and see how many trees you can identify. Taking into consideration all the different uses from one tree, your expert knowledge might just come in handy someday.
Would you like to brush up on your knowledge of tree species? Then why not enrol in one of the many courses offered by EcoTraining? To find out more, email firstname.lastname@example.org
If you would like to still learn more have a look at our Flora Friday Series on EcoTraining TV.