Osmunda regalis Linnaeus
royal fern
Family: Osmundaceae



sterile frond
sterile frond

Osmunda regalis is a very distinctive fern. The fronds can exceed 1 meter in length and the blades are 2-pinnate. The pinnules are attached by a very narrow base. Fertile fronds are similar to the sterile fronds, in the lower and middle portions, but the top-most pinnae are fertile and they are much reduced and brown when mature (early summer).

O. regalis ranges from Newfoundland to Ontario, south to Texas and Florida. In Wisconsin it is common throughout the state in wet forests and bogs, and less often in wet, sunny sites.

Key to Ferns

Introduction to Ferns

Glossary of terms

List of all Pteridophytes

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