Haworthia Limifolia is also named Fairies Washboard or File Leafed Haworthia. It's a rosette-forming succulent growing up to 10cm wide. 
 
This plant will be happy in a freely draining soil mix and placed in a bright position with a little direct sunlight. Water when the soil is dry. Cut back on watering in Autumn/Winter. 
 
Supplied in a 12cm nursery pot.