PlantsFernsCinnamon Fern & Royal Fern — Genus Osmunda
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Cinnamon Fern —  Osmunda cinnamomea [1,2,3]
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Royal Fern —  Osmunda regalis [1,2,3]
Evidence that species is found in Texas:
  1. USDA Plants Database, advanced search for Texas plants from the United States Department of Agriculture.
  2. Shinners & Mahler's Illustrated Flora of North Central Texas, George M. Diggs, Jr., Barney L. Lipscomb, and Robert J. O'Kennon, Botanical Research Institute of Texas (BRIT), Fort Worth, Texas, 1999. An invaluable resource for identifying Texas plants. Excellent glossary.
  3. Atlas of the Vascular Plants of Texas, Volume 2, B.L. Turner, Holly Nichols, Geoffrey Denny and Oded Doron, Botanical Research Institute of Texas (BRIT), Fort Worth, Texas, 2003.