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... more about "Dryopteris expansa"
James D. Montgomery +  and Warren H. Wagner Jr. +
(C. Presl) Fraser Jenkins & Jermy +
Nephrodium expansum +
Northern wood fern +, spreading wood fern +  and dryoptère dressée +
Greenland +, Alta. +, B.C. +, Nfld. +, N.W.T. +, Ont. +, Que. +, Yukon +, Alaska +, Calif. +, Idaho +, Mich. +, Minn. +, Mont. +, Oreg. +, Wash. +, Wis. +, Wyo. +  and Europe. +
50–1500 m +
Cool moist woods and rocky slopes +
Brit. Fern Gaz. +
Dryopteris assimilis +  and Dryopteris dilatata subsp. americana +
Dryopteris expansa +
Dryopteris +
species +