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Osmunda
Family: Osmundaceae
Osmunda image
Kathleen Pigg
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R. David Whetstone
T. A. Atkinson in Flora of North America (vol. 2)
Plants terrestrial. Stems creeping; tips often somewhat erect. Leaves dimorphic; fertile leaves erect, often notably smaller than sterile leaves in length and width. Blades 1--2-pinnate; pinnae monomorphic to dimorphic, pinnatifid or pinnate.
Vascular plants of NE US and adjacent Canada
Coarse ferns with pinnate-pinnatifid or bipinnate lvs. 10, cosmop

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Species within inventory project: North American Species Lists
Osmunda regalis
Image of Osmunda regalis

The PCC, and this data portal, were made possible by funding from the National Science Foundation’s Advancing Digitization of Biological Collections (ADBC) program, grant numbers 1802504, 1802352, 1802134, 1802033, 1802270, 1802255, 1802239, 1802446, 1802305.
The pteridoportal taxonomic thesaurus is based on the Checklist of Ferns and Lycophytes of the World, generously provided by Michael Hassler.