Genus: Osmunda — royal fern
This is one of two genera in the Osmundaceae family in New England, which can be distinguished from each other by the structure and appearance of their fertile leaves. In this genus, the fertile leaves have some leaflets bearing sporangia, while others are sterile. The fertile leaflets are brown when mature, while the sterile leaflets are green.
Osmundaceae (royal fern family)
This genus’s species in New England
Visit this genus in the Dichotomous Key