Botanical features of the Algerian Sahara

by William Austin Cannon

Fig. 26. Upper surface of rocks, showing small incrusting lichens, on a low mountain about 5km. north of the M’Zab Valley, Ghardaia.

PLATE 11

Fig. 27. Habitat of Peganum harmala, at Melika, Ghardaia.

Fig. 28. Shoot and leaf habit of Peganum harmala, from Ghardaia.

PLATE 12

Fig. 29. Habit of Henophyton deserti at Ghardaia when growing in a protected situation (cemetery).