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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.


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.
[G. aspidion, a little shield, dim. of aspis, shield]

aspidium (as·piˑ·dē·m),

n Latin name:
Dryopteris filix-mas L; parts used: leaves, oil, resin, roots; uses: in topical preparations for circulatory, respiratory, and skin conditions, joint or muscle pain, internal preparation for tapeworm; precautions; pregnancy; poisonous when ingested.




the dried products of a genus of plants known as male fern (Dryopteris filix-mas). Contains an oleoresin capable of causing liver damage. Used at one time as an anthelmintic.
References in periodicals archive ?
subeffusa, Aspidium macrum Fee, and Aspidium latissimum Fee.
Leatherleaf fern (Rumohraadiantiformis, often sold as Aspidium capense).
fibrillosum, and lectotypes are designated for Aspidium araguato, Dryopteris villosula, D.
fibrillosum, y se designan lectotipos para Aspidium araguato, Dryopteris villosula, D.
The type number of the synonym Aspidium araguatum (Moritz 202) is mixed.
Spore germination was of the Vittaria model and the developmental pattern was of the Aspidium model.
Fee (1869) applied the name Aspidium consobrinum Fee (=Ctenitis), type from Guadeloupe, to the Brazilian specimens Glaziou 2350, 979, and Gaulthier s.