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Matteuccia struthiopteris  
Family: Onocleaceae
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Paul Rothrock
  • Gleason & Cronquist
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Vascular plants of NE US and adjacent Canada
Clonal, with deep-seated long-creeping black rhizomes as well as erect leafy crowns; sterile lvs 0.5-2(-3) m, short-petiolate; blade ±hairy along the rachis and costae, oblanceolate, 1.5-5 dm wide, pinnae numerous, alternate, gradually reduced toward the base of the blade, more abruptly so upwards, long-acuminate, deeply pinnatifid with 20+ pairs of segments, these pinnately open-veined, oblong, obtuse, with slightly revolute, crenulate margin; fertile lvs produced from midsummer to early fall, not over 7 dm, the numerous pinnae 2-6 cm נ2-4 mm, obtuse, their numerous, crowded pinnules hooded; 2n=80. Swamps and moist woods in circumneutral soil; circumboreal, in Amer. s. to Va., Mo., S.D., and B.C. (M. pensylvanica; Pteretis nodulosa)

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.
David M. Johnson in Flora of North America (vol. 2)
Varieties 2 (1 in the flora): North America, Eurasia.
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Paul Rothrock
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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.