-kəm noun
Usage: capitalized
Etymology: New Latin, from Greek polystichon, neuter of polystichos of many rows, of many lines
: a genus of chiefly northern ferns (family Polypodiaceae) having lanceolate pinnate or bipinnate often evergreen fronds with the veins free and the indusia lacking sinuses and centrally peltate — see christmas fern , holly fern