Flora of the Southeastern United States

*Deparia petersenii (Kunze) M. Kato. Common name: Japanese Lady Fern. Phenology: Jun-Oct. Habitat: Swamp forests, wet hammocks, moist banks, disturbed areas. Distribution: Introduced and naturalized in the Southeast, including in sw. NC (K.A. Bradley, pers.comm., 2021), e. and w. SC (K.A. Bradley, pers.comm., 2021), c. and s. GA, AL, s. MS, e. LA, and FL, from a native distribution in e., se., and s. Asia. See Wyatt (2020) for discussion of naturalization in our region.

ID notes: The contrast of stiff silvery hairs against a dark brown petiole (stipe) and rachis is a helpful diagnostic feature.

Origin/Endemic status: E. and se. Asia

Taxonomy Comments: Deparia petersenii as currently broadly circumscribed is a polyploid complex, likely to be interpreted in the future as including several species (Kuo et al. 2018, Shinohara et al. 2006).

Synonymy ⓘ: = Fl1, FNA2, K4, POWO, WH3, Lin et al (2013), Shinohara et al (2006); Asplenium petersenii Kunze = Deparia japonica (Thunb.) M.Kato — NS, misapplied; = Deparia petersonii, orthographic error; = Diplazium japonicum (Thunb.) Bedd., misapplied; = n/a — RAB. Basionym: Asplenium petersenii Kunze 1837

Links to other floras: = Deparia petersenii - FNA2

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACW
• Eastern Mountains and Piedmont: FACW