Dryopteris thelypteris
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Read about Dryopteris thelypteris in the Standard Cyclopedia of Horticulture
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Dryopteris Thelypteris, Gray (Aspidium Thelypteris, Swartz). Marsh Fern. Rootstock creeping: lvs. scattered, clear green, 1-2 ft. long; margins of the spore-bearing pinnae often strongly convolute: sori 10-12 to each segm. Canada to Fla. and Texas.—A form with pinnae variously forked at tip is known as Pufferae.
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- REDIRECT Thelypteris palustris