sessile(a = adj.all) stalkless - attached directly by the base; not having an intervening stalk; "sessile flowers"; "the shell of a sessile barnacle is attached directly to a substrate"
sessile, adj.
1 Bot. & Zool. (of a flower, leaf, eye, etc.) attached directly by its base without a stalk or peduncle.
2 fixed in one position; immobile.