Rostellar :: Rostellar (a.) Pertaining to a rostellum.
Rostellate :: Rostellate (a.) Having a rostellum, or small beak; terminating in a beak..
Rostelliform :: Rostelliform (a.) Having the form of a rostellum, or small beak..
Rostellum :: Rostellum (n.) A small beaklike process or extension of some part; a small rostrum; as, the rostellum of the stigma of violets, or of the operculum of many mosses; the rostellum on the head of a tapeworm..