词条 | Dryopteridaceae |
释义 | Dryopteridaceae plant family ![]() Several of the larger genera contain species that are cultivated in gardens, including Cyrtomium (as many as 20 species; holly fern), Dryopteris (250 species; shield fern, or wood fern), and Polystichum (160–200 species; also known as shield fern). The rhizomes (rhizome) of various species have been used medicinally and by veterinarians for their antibacterial properties and to treat parasitic worms. Dryopteridaceae species are considered relatively advanced ferns. The limits of the family are still not well understood. Elaphoglossum (more than 700 species), which was formerly a genus in Lomariopsidaceae, contains several species that are sometimes cultivated in greenhouses for their stiff undivided leaves, which have interesting and diverse scales. At the end of the 20th century, the halberd fern genus, Tectaria, and several related genera were split into a new family, Tectariaceae, containing 8–15 genera and some 230 species. |
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