These curious thin line markings encircling small surface patches were found on the bark of a baobab tree in the Kruger National Park. They may represent signs of superficial flaking. The pale, multicoloured, often glossy bark of Adansonia digitata is fairly soft, from 5 cm to 10 cm in thickness on old trees.
It is not clear whether the bright white spots in picture are a feature of the tree’s own growth or inflicted by an insect or some other outside source. They have been described as “warts, resembling wax on candles”.
The patch in picture is too small to show the folding or longitudinal ribbing commonly found on baobab stem surfaces.
Stem damage caused by local people who remove pieces of the bark for making mats, ropes, fishing nets and lines, sacks and even clothing, usually has very little effect on the tree. The baobab does not die from ring-barking, simply re-grows new bark when elephants or people help themselves to its covering (Schmidt, et al, 2002; Coates Palgrave, 2002; www.plantzafrica.com).