Pentzia incana is a much branched shrub that grows to 60 cm in height, one of many plants called Karoobossies (little bushes of the Karoo).
The growth habit of this plant during rainy seasons make some of the stems curve down and root in additional spots around the parent plant. This brought the plant the Afrikaans common name of ankerkaroo (anchor Karoo).
The backup rooting serves to multiply the plant vegetatively and extract more nutrients from the Karoo soil. But why anchor? Maybe an imaginative farmer contemplating the rooted branches (there not being much else to occupy the mind amidst the vast solitude of these farms), thought that wind or browser might uproot the plant, bringing a need for anchoring.
In another notable sense sheep farmers of the Karoo acknowledge the importance of this fodder plant that anchors their entire livelihood in farm land (Vlok and Schutte-Vlok, 2010; iSpot).