Echidnopsis cereiformis       Hook.f.

DESCRIPTION: a small succulent with cylindrical stems with 6 to 10, usually 8 ribs lined with slightly prominent, more or less hexagonal tubercles. The stems typically grow up to 30 cm long, at first erect, becoming prostrate with age. They range from green and dull dark green to brownish-green or reddish. Each tubercle has a leaf rudiment at the tip, which soon dries out. Flowers colour is variable.

DISTRIBUTION: Sudan, Ethiopia, Eritrea