Fig. 5. Shoot-habit of Zollikoferia spinosa. Laghouat.
Fig. 6. Acanthyllis tragacanthoides on sandy plain. Laghouat.
Fig. 7. Zollikoferia spinosa in habitat, plain (hamada). Laghouat.
PLATE 3
Fig. 8. Detail of north slope of Nomad Mountains where Zollikoferia spinosa is the dominant species. Laghouat.