
The rhizomes and stipes of Dryopteris filix-mus (European aspidium or male fern), or of Dryopteris marginalis (American aspidium or marginal fern) (family Polypodiaceae); used in the treatment of tapeworm infestation, usually in the form of the oleoresin or extract, but because of its potential toxicity, its use is restricted to patients who do not...
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http://www.encyclo.co.uk/local/20973

(as-pid´e-әm) the dried products of a genus of plants known as male fern; it was formerly used to treat tapeworm infestations but was found to be highly toxic to the gastrointestinal tract.
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http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: as-pid′ē-ŭm Definitions: 1. The rhizomes and stipes of Dryopteris filixmus (European aspidium or male fern), or of D. marginalis (American aspidium or marginal fern, family Polypodiaceae); an anthelmintic.
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http://www.medilexicon.com/medicaldictionary.php?t=7964

Aspidium is a genus of ferns of the natural order Polypodiaceae, comprising the shield-fern and male-fern.
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http://www.probertencyclopaedia.com/browse/BAA.HTM

aspidium The rhizomes and stipes of Dryopteris filix-mus (European aspidium or male fern), or of Dryopteris marginalis (American aspidium or marginal fern) (family Polypodiaceae); used in the treatment of tapeworm infestation, usually in the form of the oleoresin or extract, but because of its potential toxicity, its use is restricted to patients w...
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http://www.wordinfo.info/words/index/info/view_unit/1046/
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