Osmundaceae of Maine
(Kingdom Plantae, Monilophytes)

a project of
V. F. Thomas Co. - 167 Thorne Mountain Road - Canton, Maine  04221

(updated 31 January 2020)

Osmundaceae - royal fern family
[information to be added]

Maine is home to 3 species in 2 genera (hybrids excluded). If you already know which species you have or are interested in learning about, click on the appropriate species link below. Otherwise, to determine which genus that the plant in question falls into, refer to the table immediately below the species list.
   Osmunda (2 species)
      Osmunda claytoniana - interrupted fern
      Osmunda regalis - royal fern
   Osmundastrum (1 species)
      Osmundastrum cinnamomeum - cinnamon fern

fertile portion
Osmunda on same leaf (frond) as sterile/photosynthetic portion
Osmundastrum on separate leaf (frond) from sterile/photosynthetic leaves (fronds)

Osmunda ([?] fern)
[information to be added]

location of fertile portion
Osmunda claytoniana in the middle of a leaf (frond), between sterile/photosynthetic portions
Osmunda regalis at tip of leaf (frond)

Osmunda claytoniana (interrupted fern) - [information to be added]

(click on image to enlarge)

Osmunda regalis (royal fern) - [information to be added]
(click on an image to enlarge)

Osmundastrum ([?] fern)
[information to be added]

Osmundastrum cinnamomeum (cinnamon fern) - [information to be added]

(click on image to enlarge)

   1. Taxonomy and nomenclature follow Flora Novae Angliae by Arthur Haines (2011, Yale University Press, ISBN 978-0-300-17154-9).