lindsæa

from The Century Dictionary.

• noun A genus of small polypodiaceous ferns of the tribe Davallieæ, with mostly pinnate or bipinnate fronds, having oblong or lunate, unilateral pinnæ or pinnules with linear marginal sori borne in a continuous or interrupted line at the summit of the radiating forked veins, and uniting two or more of them. There are about 30 species, mainly tropical, in appearance closely resembling Adiantum of the tribe Pterideæ, but readily distinguished by the presence of a special indusium attached on the interior side, forming with the plane margin a bilabiate furrow-within which the sori are borne.