Truncata is a small plant, being approximately 2 cm (0.79 in) high by 10 cm (3.9 in) wide. This species is easily recognizable by its leaves which have a nearly rectangular cross-section and are arranged in two opposite rows. The leaves are gray or gray-green and are held more or less upright. The end of a leaf – the upper surface – gives the impression of having been cut (or truncated), hence the specific epithet truncata. The leaves are covered in white or gray lines with verrucosities.
Source: Wikipedia