The plants in this genus have long or short, thick, flat or triangular in section, dagger or sword-shaped. Their colouring is light green to grey, and they are marked in every possible style or manner, some being smooth and some covered with rough tubercles. There are about 50 species. The are red, green-edged, and more or less trumpet-shaped, flowering at almost any time. The plants are easy of cultivation if grown in half shade, and require frequent water in summer; during the winter they should be kept fairly dry. They are natives of South Africa.
Gasteria acinacijolia. The leaves form a rosette, sword-shaped and flattened on one side. They are a smooth, shining dark green with white dots.
Gasteria verrucosa. Probably the most handsome of the genus. Its concave green leaves are arranged one above the other in two series, running out to a point and curved upwards. They are entirely covered with small granular whitish-grey tubercles. If placed in a sunny spot in the winter season, the leaves assume shades of pink, and are very attractive.
Gasteria maculata. A very attractive species; the leaves are long and smooth, dark green, and splashed with round white spots which are more or less arranged to form bands across the leaves.