polystichum(n = noun.plant) genus polystichum - small to medium-sized terrestrial ferns especially holly ferns; in some classification systems placed in Polypodiaceae;
is a kind of fern genus
is a member of athyriaceae, dryopteridaceae, family athyriaceae, family dryopteridaceae

genus polystichum, polystichum acrostichoides, polystichum aculeatum, polystichum adiantiformis, polystichum braunii, polystichum lonchitis, polystichum scopulinum, polystichum setiferum