blechnaceae: one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; includes genera Blechnum, Doodia, Sadleria, Stenochlaena, and Woodwardia
fern family: families of ferns and fern allies
sitar: a stringed instrument of India; has a long neck and movable frets; has 6 or 7 metal strings for playing and usually 13 resonating strings