What is the scientific name for the plant commonly known as Bacopa?

The scientific name for the plant commonly known as Bacopa is indeed Sutera. Bacopa refers to a group of flowering plants in the family Plantaginaceae, and they are widely recognized for their cascading growth habit and small, attractive flowers. The term "Bacopa" is actually a common name used in horticulture, while "Sutera" is the genus name that encompasses various species commonly sold in nurseries and garden centers under the Bacopa name.

Sutera species are often utilized in landscaping and container gardening due to their ability to thrive in moist conditions and their vibrant blooms. This genus includes many varieties that are ideal for hanging baskets, as they spread out and create a beautiful floral display.

The other choices are separate genera with distinct characteristics and are not related to the Bacopa plant. For instance, Lobelia is known for its upright and trailing types, Petunia is recognized for its large, colorful flowers, and Cosmos is notable for its tall, feathery foliage and daisy-like flowers. Therefore, the correct identification of Bacopa as Sutera aligns with botanical classification and common horticultural usage.