USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Wetland Plants and Plant Communities of Minnesota and Wisconsin


(Osmunda cinnamomea L.)

Cinnamon fern



FIELD CHARACTERISTICS: A clump-forming, perennial fern with a stout rhizome, growing to a height of 6-12(16) dm. The fronds are of two types. The sterile fronds are green, pinnate-pinnatifid, with a tuft of cinnamon-colored hair at the base of the pinnae, and a few hairs along the margins of the segments. The fertile (spore- bearing) fronds are cinnamon-colored and hairy.

0. cinnamomea can be distinguished from the related royal fern (0. regalis) and interrupted fern (0. claytoniana) by the following:

ECOLOGICAL NOTES: Cinnamon fern is found in wooded swamps, shrub swamps, bogs, and along streambanks. The fertile fronds die back by mid-summer and are not readily apparent.

SOURCE: Gleason and Cronquist (1991); and Tryon (1980).

Previous Section -- Northern White Cedar (Thuja occidentalis L.)
Return to Contents
Next Section -- VII. Floodplain Forests

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:32:18 EST
Sioux Falls, SD [sdww55]