Pogostemon stellatus, formerly Eusteralis stellata, is a perennial

Perennial plant

A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter lived annuals and biennials. The term is sometimes misused by commercial gardeners or horticulturalists to describe only herbaceous perennials...

 herb from southeast Asia and northern Australia, including the island of New Guinea. Because of its extensive and somewhat fragmented geographic distribution, there are many different color and leaf forms of this plant in the wild. It is a highly prized and sought after aquatic plant

Aquatic plant

Aquatic plants are plants that have adapted to living in aquatic environments. They are also referred to as hydrophytes or aquatic macrophytes. These plants require special adaptations for living submerged in water, or at the water's surface. Aquatic plants can only grow in water or in soil that is...

in the aquarium trade.