What is the common name for Dryopteris erythrosora?

The common name for Dryopteris erythrosora is Autumn Fern. This fern is well-known for its attractive foliage, which typically displays a vivid orange to bronze color when the new fronds emerge in the spring, before maturing to a rich green. The name "Autumn Fern" reflects not only the seasonal appearance of its fronds but also its suitability for garden settings, where it can provide color throughout the year, particularly in the fall.

Other choices, while they refer to different types of ferns, are not applicable to Dryopteris erythrosora. For instance, the Shield Fern refers to a different species that is recognized for its distinct leaf shape and habit. The Hay-scented Fern is known for its fragrant foliage and is a separate species as well. Lastly, the Royal Fern is a larger fern characterized by a different growth form and habitat requirements. Therefore, Autumn Fern is the correct designation for Dryopteris erythrosora, highlighting its unique characteristics and common usage in landscape horticulture.