- n Dennstaedtia chiefly terrestrial ferns; in some classification systems placed in family Polypodiaceae
Century Dictionary and Cyclopedia
- n dennstaedtia A genus of polypodiaceous ferns, of the tribe Davallieæ, with slender creeping rootstocks and delicate solitary twice or thrice pinnate fronds 2 to 6 feet high. The globose sorus is terminal, the sporangia borne within a special cup-shaped indusium which is more or less adherent on the exterior side to the reflexed segment of the leaf margin. There are about 20 species, mostly tropical and subtropical; but one, D. punctilobula, the hay-scented fern, occurs in the United States and Canada. See Dicksonia.