Water and forage have to be carried for them on camels.
Erectus is a useful forage grass on dry chalky soil.
Cereals and forage plants can be successfully grown everywhere, and varied and profitable agriculture is possible even on the " pine-barrens " or uplands of the N.; but more intelligent and more intensive farming is necessary than that practised by the average " pineywoods " farmer.
In 1648 one of their ships was stranded in Table Bay, and the shipwrecked crew were left to forage for themselves on shore for several months.
The only British representative is Cynodon Dactylon (dog's tooth, Bermuda grass) found on sandy shores in the south-west of England; it is a cosmopolitan, covering the ground in sandy soils, and forming an important forage grass in many dry climates (Bermuda grass of the southern United States, and known as durba, dub and other names in India).