Which species is commonly known as Dracaena?

Dracaena refers specifically to a genus of around 120 species of plants known for their striking, often architectural shapes and vibrant foliage. They are popular in landscaping and as houseplants due to their ability to thrive in a variety of lighting conditions and their relatively low maintenance needs. Dracaena species exhibit a diversity of leaf forms and colors, making them desirable for ornamental use.

The other options listed do not belong to the Dracaena genus. Ficus, for example, includes species like the common fig and rubber plant, which are distinct and belong to a different family altogether. Similarly, Philodendron includes tropical plants known for their unique leaf shapes and climbing habits, and Plectranthus australis, commonly known as Swedish Ivy, is not related to Dracaena. Thus, the correct identification of Dracaena is essential for understanding plant taxonomy and proper care in horticulture.