Chemlali- Tunisia This variety is of very ancient origin and makes up the "forest" of Sfax. This area is characterised by an average annual rainfall of less than 2cm. However it is still the most important and widespread variety in the country. The tree is extremely rigorous and hardy, but has a low rooting ability It is self compatible and produces abundant pollen. Productivity is high and alternate The fruit ripens late, is moderately sized and arranged in numerous clusters. The oil yeild is medium to high, the oil has a very characteristic chemical and aromatic profile It is extremely resistant to drought, and it is moderately tolerant of salinity. In contrast, it is sensitive to olive knot