thelypteris dryopteris(n = noun.plant) gymnocarpium dryopteris, oak fern - bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere;
is a kind of fern
is a member of genus gymnocarpium, gymnocarpium

dryopteris, dryopteris dilatata, dryopteris filix-mas, dryopteris fragrans, dryopteris goldiana, dryopteris hexagonoptera, dryopteris marginalis, dryopteris noveboracensis, dryopteris oreades, dryopteris oreopteris, dryopteris phegopteris, dryopteris thelypteris, dryopteris thelypteris pubescens, genus dryopteris, genus thelypteris, gymnocarpium dryopteris, thelypteris, thelypteris hexagonoptera, thelypteris palustris, thelypteris palustris pubescens, thelypteris phegopteris, thelypteris simulata