Hordeum Pusillum is the scientific name for a type of barley plant that typically grows in dry, arid regions. However, there are various synonyms that can be used to refer to this plant, including little barley, sand barley, and small-seeded barley. These alternative names are often used interchangeably depending on the region and the context in which the plant is being discussed. Little barley, for example, is often used in the United States to describe Hordeum Pusillum that grows in wetter areas, while sand barley is commonly used in Australia to describe the plant's ability to thrive in sandy soils. Regardless of the synonym used, Hordeum Pusillum remains a valuable agricultural crop for farmers around the world.