Thelypteris palustris
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- A Floristic Survey of Acid Seep Springs in Martin and Dubois Counties, Indiana
- Ferns, Fern Allies and Lycophytes Strouds Run Area
- Fossil Fern Fronds from the Early Pleistocene Kobiwako Group in Minakuchi, Shiga Prefecture, Central Japan
- European Red List of Lycopods and Ferns
- Botanist Interior 40.1
- Filipendula Rubra (Hill) Robbis
- Nbfs Lille Bregnebok De Leptosporangiate Bregnene
- Thelypteridaceae (PDF)
- Floristic Quality Assessment Index (FQAI) for Vascular Plants and Mosses for the State of Ohio
- Minnesota's Native Vegetation: a Key to Natural Communities Is Strongly Influenced by Geographical Limitations of Available Vegetation Data
- The Vegetation Index of Biological Integrity: 2011 (PDF)
- Vascular Plant Survey of Greenwoods Conservancy, Summer 1997
- A Community-Derived Classification for Extant Lycophytes and Ferns
- Polemonium Reptans L
- Vascular Plant Inventory and Ecological Community Classification for Little River Canyon National Preserve