Characteristics
Pteridophytes
Osmunda spectabilis Willd.
ROYAL FERN
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The typical variety, var. regalis, is found in the Old Word (Fernald 1930). Treating the American taxon, var. spectabilis, as a distinct species has also been advocated based on analysis of DNA which suggests var. spectabilis is more closely related to O. japonica (Metzgar et al. 2008; Tsutsumi et al. 2011; Arana et al. 2015; Schneider et al. 2015).
Native OBL (NWPL) OBL (DEP)
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Classification
OSMUNDALES
Osmunda spectabilis Willd. - ROYAL FERN
Citation
OSMUNDA SPECTABILIS Willdenow, Sp. Pl. 5(1): 98. 1810.
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PENNSYLVANIA: Without data, Muhlenberg s.n. (lectotype: B-W; isolectotype: S). Lectotypified by Tryon & Stolze, Fieldiana, Bot. 20: 23. 1989.
Species Distribution Map

Based on vouchered plant specimens from wild populations. Cultivated occurrences are not mapped. Click on a county to display its name.

Source
Synonyms
Specimens and Distribution

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Counties listed:

Range of years during which specimens were collected: