What plant species does the name Nephrolepis cover?

The name Nephrolepis refers to a genus of ferns, with Nephrolepis exaltata being one of the most recognized species within that genus. Specifically, Nephrolepis exaltata 'Bostoniensis' is a cultivar commonly known as Boston fern. This plant is characterized by its lush, arching fronds and is popular in both indoor and outdoor landscaping.

Ferns in the Nephrolepis genus are known for their ability to thrive in humid environments and are often used as ornamental houseplants due to their attractive foliage. The distinction of the correct choice lies in the fact that it specifically identifies a plant within the Nephrolepis genus, while the other options refer to entirely different genera. Philodendron, Dracaena, and Ficus are separate groups of plants unrelated to ferns and thus do not fall under the classification of Nephrolepis.