What is the common name for the plant scientifically referred to as Iris sp.?

The correct answer is Iris. The term "Iris sp." refers to any species within the Iris genus, which is widely recognized for its vibrant flowers and distinct structure. The common name "Iris" applies broadly to this genus, making it the most accurate and straightforward way to refer to these plants in general.

Iris plants are known for their beautiful blooms, which can vary in color, shape, and size, depending on the specific species. They are commonly used in gardens and landscapes for their ornamental value.

The other plant names provided, such as Iberis sempervirens (often known as candytuft), Coralbells (which refers to plants in the Heuchera genus), and Hemerocallis (commonly known as daylilies), refer to entirely different species with different characteristics and botanical classifications. Thus, identifying the common name as Iris is appropriate since it directly corresponds to the scientific designation of Iris sp.